wbx: squashed Ben's WBX work

8 files changed, 1447 insertions, 461 deletions

diff --git a/host/lib/ic_reg_maps/gen_adf4350_regs.py b/host/lib/ic_reg_maps/gen_adf4350_regs.py
index bccdb2edf..fce2f569b 100755
--- a/host/lib/ic_reg_maps/gen_adf4350_regs.py
+++ b/host/lib/ic_reg_maps/gen_adf4350_regs.py
@@ -51,6 +51,7 @@ reference_divide_by_2   2[24]       1       disabled, enabled
 reference_doubler       2[25]       0       disabled, enabled
 muxout                  2[26:28]    1       3state, dvdd, dgnd, rdiv, ndiv, analog_ld, dld, reserved
 low_noise_and_spur      2[29:30]    3       low_noise, reserved0, reserved1, low_spur
+##reserved              2[31]       0
 ########################################################################
 ## address 3
 ########################################################################
diff --git a/host/lib/usrp/dboard/CMakeLists.txt b/host/lib/usrp/dboard/CMakeLists.txt
index a865a7858..744285ac3 100644
--- a/host/lib/usrp/dboard/CMakeLists.txt
+++ b/host/lib/usrp/dboard/CMakeLists.txt
@@ -27,6 +27,9 @@ LIBUHD_APPEND_SOURCES(
     #${CMAKE_CURRENT_SOURCE_DIR}/db_sbx_version3.cpp
     #${CMAKE_CURRENT_SOURCE_DIR}/db_sbx_version4.cpp
     #${CMAKE_CURRENT_SOURCE_DIR}/db_wbx_common.cpp
+    #${CMAKE_CURRENT_SOURCE_DIR}/db_wbx_version2.cpp
+    #${CMAKE_CURRENT_SOURCE_DIR}/db_wbx_version3.cpp
+    #${CMAKE_CURRENT_SOURCE_DIR}/db_wbx_version4.cpp
     #${CMAKE_CURRENT_SOURCE_DIR}/db_wbx_simple.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/db_dbsrx.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/db_unknown.cpp
diff --git a/host/lib/usrp/dboard/db_wbx_common.cpp b/host/lib/usrp/dboard/db_wbx_common.cpp
index c7f8ba55d..63f70e3d5 100644
--- a/host/lib/usrp/dboard/db_wbx_common.cpp
+++ b/host/lib/usrp/dboard/db_wbx_common.cpp
@@ -15,151 +15,22 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
-// Common IO Pins
-#define ADF4350_CE      (1 << 3)
-#define ADF4350_PDBRF   (1 << 2)
-#define ADF4350_MUXOUT  (1 << 1)                // INPUT!!!
-#define LOCKDET_MASK    (1 << 0)                // INPUT!!!
-
-// TX IO Pins
-#define TX_PUP_5V       (1 << 7)                // enables 5.0V power supply
-#define TX_PUP_3V       (1 << 6)                // enables 3.3V supply
-#define TXMOD_EN        (1 << 4)                // on UNIT_TX, 1 enables TX Modulator
-
-// RX IO Pins
-#define RX_PUP_5V       (1 << 7)                // enables 5.0V power supply
-#define RX_PUP_3V       (1 << 6)                // enables 3.3V supply
-#define RXBB_PDB        (1 << 4)                // on UNIT_RX, 1 powers up RX baseband
-
-// RX Attenuator Pins
-#define RX_ATTN_SHIFT   8                       // lsb of RX Attenuator Control
-#define RX_ATTN_MASK    (63 << RX_ATTN_SHIFT)      // valid bits of RX Attenuator Control
-
-// TX Attenuator Pins (v3 only)
-#define TX_ATTN_16      (1 << 14)
-#define TX_ATTN_8       (1 << 5)
-#define TX_ATTN_4       (1 << 4)
-#define TX_ATTN_2       (1 << 3)
-#define TX_ATTN_1       (1 << 1)
-#define TX_ATTN_MASK    (TX_ATTN_16|TX_ATTN_8|TX_ATTN_4|TX_ATTN_2|TX_ATTN_1)      // valid bits of TX Attenuator Control
-
-// Mixer functions
-#define TX_MIXER_ENB    (TXMOD_EN|ADF4350_PDBRF)    // for v3, TXMOD_EN tied to ADF4350_PDBRF rather than separate
-#define TX_MIXER_DIS    0
-
-#define RX_MIXER_ENB    (RXBB_PDB|ADF4350_PDBRF)
-#define RX_MIXER_DIS    0
-
-// Power functions
-#define TX_POWER_UP     (TX_PUP_5V|TX_PUP_3V) // high enables power supply
-#define TX_POWER_DOWN   0
-
-#define RX_POWER_UP     (RX_PUP_5V|RX_PUP_3V|ADF4350_CE) // high enables power supply
-#define RX_POWER_DOWN   0
-
 #include "db_wbx_common.hpp"
 #include "adf4350_regs.hpp"
-#include <uhd/utils/log.hpp>
 #include <uhd/types/dict.hpp>
 #include <uhd/types/ranges.hpp>
 #include <uhd/types/sensors.hpp>
 #include <uhd/utils/assert_has.hpp>
 #include <uhd/utils/algorithm.hpp>
 #include <uhd/utils/msg.hpp>
-#include <uhd/usrp/dboard_base.hpp>
-#include <boost/assign/list_of.hpp>
-#include <boost/format.hpp>
-#include <boost/math/special_functions/round.hpp>
 
 using namespace uhd;
 using namespace uhd::usrp;
 using namespace boost::assign;
 
-/***********************************************************************
- * The WBX Common dboard constants
- **********************************************************************/
-static const uhd::dict<std::string, gain_range_t> wbx_tx_gain_ranges = map_list_of
-    ("PGA0", gain_range_t(0, 25, 0.05))
-;
-
-static const uhd::dict<std::string, gain_range_t> wbx_v3_tx_gain_ranges = map_list_of
-    ("PGA0", gain_range_t(0, 31, 1.0))
-;
-
-static const uhd::dict<std::string, gain_range_t> wbx_rx_gain_ranges = map_list_of
-    ("PGA0", gain_range_t(0, 31.5, 0.5))
-;
-
-/***********************************************************************
- * WBX Common Implementation
- **********************************************************************/
-wbx_base::wbx_base(ctor_args_t args) : xcvr_dboard_base(args){
-
-    //enable the clocks that we need
-    this->get_iface()->set_clock_enabled(dboard_iface::UNIT_TX, true);
-    this->get_iface()->set_clock_enabled(dboard_iface::UNIT_RX, true);
-
-    //v3 has different io bits for attenuator control
-    int v3_iobits = is_v3() ? TX_ATTN_MASK : ADF4350_CE;
-    int v3_tx_mod = is_v3() ? ADF4350_PDBRF : TXMOD_EN|ADF4350_PDBRF;
-
-    //set the gpio directions and atr controls
-    this->get_iface()->set_pin_ctrl(dboard_iface::UNIT_TX, v3_tx_mod);
-    this->get_iface()->set_pin_ctrl(dboard_iface::UNIT_RX, RXBB_PDB|ADF4350_PDBRF);
-    this->get_iface()->set_gpio_ddr(dboard_iface::UNIT_TX, TX_PUP_5V|TX_PUP_3V|v3_tx_mod|v3_iobits);
-    this->get_iface()->set_gpio_ddr(dboard_iface::UNIT_RX, RX_PUP_5V|RX_PUP_3V|ADF4350_CE|RXBB_PDB|ADF4350_PDBRF|RX_ATTN_MASK);
-
-    //setup ATR for the mixer enables (always enabled to prevent phase slip between bursts)
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE,        v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_RX_ONLY,     v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_TX_ONLY,     v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_FULL_DUPLEX, v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
-
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE,        RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_RX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
-    this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
-
-    //set some default values
-    if (is_v3()) {
-        BOOST_FOREACH(const std::string &name, wbx_v3_tx_gain_ranges.keys()){
-            set_tx_gain(wbx_v3_tx_gain_ranges[name].start(), name);
-        }
-    }
-    else {
-        BOOST_FOREACH(const std::string &name, wbx_tx_gain_ranges.keys()){
-            set_tx_gain(wbx_tx_gain_ranges[name].start(), name);
-        }
-    }
-
-    BOOST_FOREACH(const std::string &name, wbx_rx_gain_ranges.keys()){
-        set_rx_gain(wbx_rx_gain_ranges[name].start(), name);
-    }
-    set_rx_enabled(false);
-    set_tx_enabled(false);
-}
-
-wbx_base::~wbx_base(void){
-    /* NOP */
-}
-
-/***********************************************************************
- * Enables
- **********************************************************************/
-void wbx_base::set_rx_enabled(bool enb){
-    this->get_iface()->set_gpio_out(dboard_iface::UNIT_RX,
-        (enb)? RX_POWER_UP : RX_POWER_DOWN, RX_POWER_UP | RX_POWER_DOWN
-    );
-}
-
-void wbx_base::set_tx_enabled(bool enb){
-    this->get_iface()->set_gpio_out(dboard_iface::UNIT_TX,
-        (enb)? TX_POWER_UP | ADF4350_CE : TX_POWER_DOWN, TX_POWER_UP | TX_POWER_DOWN | (is_v3() ? 0 : ADF4350_CE)
-    );
-}
 
 /***********************************************************************
- * Gain Handling
+ * Gain-related functions
  **********************************************************************/
 static int rx_pga0_gain_to_iobits(double &gain){
     //clip the input
@@ -182,79 +53,50 @@ static int rx_pga0_gain_to_iobits(double &gain){
     return iobits;
 }
 
-//v3 TX gains
-static int tx_pga0_gain_to_iobits(double &gain){
-    //clip the input
-    gain = wbx_v3_tx_gain_ranges["PGA0"].clip(gain);
-
-    //convert to attenuation
-    double attn = wbx_v3_tx_gain_ranges["PGA0"].stop() - gain;
 
-    //calculate the attenuation
-    int attn_code = boost::math::iround(attn);
-    int iobits = (
-            (attn_code & 16 ? 0 : TX_ATTN_16) |
-            (attn_code &  8 ? 0 : TX_ATTN_8) |
-            (attn_code &  4 ? 0 : TX_ATTN_4) |
-            (attn_code &  2 ? 0 : TX_ATTN_2) |
-            (attn_code &  1 ? 0 : TX_ATTN_1) 
-        ) & TX_ATTN_MASK;
-
-    UHD_LOGV(often) << boost::format(
-        "WBX TX Attenuation: %f dB, Code: %d, IO Bits %x, Mask: %x"
-    ) % attn % attn_code % (iobits & TX_ATTN_MASK) % TX_ATTN_MASK << std::endl;
-
-    //the actual gain setting
-    gain = wbx_v3_tx_gain_ranges["PGA0"].stop() - double(attn_code);
-
-    return iobits;
+/***********************************************************************
+ * WBX Common Implementation
+ **********************************************************************/
+wbx_base::wbx_base(ctor_args_t args) : xcvr_dboard_base(args){
+    switch(get_rx_id().to_uint16()) {
+        case 0x053:
+            db_actual = wbx_versionx_sptr(new wbx_version2(this));
+            return;
+        case 0x057:
+            db_actual = wbx_versionx_sptr(new wbx_version3(this));
+            return;
+        case 0x063:
+            db_actual = wbx_versionx_sptr(new wbx_version4(this));
+            return;
+        default:
+            /* We didn't recognize the version of the board... */
+            UHD_THROW_INVALID_CODE_PATH();
+    }
 }
 
-//Pre v3 TX gains
-static double tx_pga0_gain_to_dac_volts(double &gain){
-    //clip the input
-    gain = wbx_tx_gain_ranges["PGA0"].clip(gain);
-
-    //voltage level constants
-    static const double max_volts = 0.5, min_volts = 1.4;
-    static const double slope = (max_volts-min_volts)/wbx_tx_gain_ranges["PGA0"].stop();
-
-    //calculate the voltage for the aux dac
-    double dac_volts = gain*slope + min_volts;
 
-    UHD_LOGV(often) << boost::format(
-        "WBX TX Gain: %f dB, dac_volts: %f V"
-    ) % gain % dac_volts << std::endl;
+wbx_base::~wbx_base(void){
+    /* NOP */
+}
 
-    //the actual gain setting
-    gain = (dac_volts - min_volts)/slope;
+/***********************************************************************
+ * Enables
+ **********************************************************************/
+void wbx_base::set_rx_enabled(bool enb){
+    this->get_iface()->set_gpio_out(dboard_iface::UNIT_RX,
+        (enb)? RX_POWER_UP : RX_POWER_DOWN, RX_POWER_UP | RX_POWER_DOWN
+    );
+}
 
-    return dac_volts;
+void wbx_base::set_tx_enabled(bool enb){
+    db_actual->set_tx_enabled(enb);
 }
 
+/***********************************************************************
+ * Gain Handling
+ **********************************************************************/
 void wbx_base::set_tx_gain(double gain, const std::string &name){
-    if (is_v3()) {
-        assert_has(wbx_v3_tx_gain_ranges.keys(), name, "wbx tx gain name");
-        if(name == "PGA0"){
-            boost::uint16_t io_bits = tx_pga0_gain_to_iobits(gain);
-            _tx_gains[name] = gain;
-
-            //write the new gain to tx gpio outputs
-            this->get_iface()->set_gpio_out(dboard_iface::UNIT_TX, io_bits, TX_ATTN_MASK);
-        }
-        else UHD_THROW_INVALID_CODE_PATH();
-    }
-    else {
-        assert_has(wbx_tx_gain_ranges.keys(), name, "wbx tx gain name");
-        if(name == "PGA0"){
-            double dac_volts = tx_pga0_gain_to_dac_volts(gain);
-            _tx_gains[name] = gain;
-
-            //write the new voltage to the aux dac
-            this->get_iface()->write_aux_dac(dboard_iface::UNIT_TX, dboard_iface::AUX_DAC_A, dac_volts);
-        }
-        else UHD_THROW_INVALID_CODE_PATH();
-    }
+    db_actual->set_tx_gain(gain, name);
 }
 
 void wbx_base::set_rx_gain(double gain, const std::string &name){
@@ -272,183 +114,18 @@ void wbx_base::set_rx_gain(double gain, const std::string &name){
 /***********************************************************************
  * Tuning
  **********************************************************************/
-double wbx_base::set_lo_freq(
-    dboard_iface::unit_t unit,
-    double target_freq
-){
-    UHD_LOGV(often) << boost::format(
-        "WBX tune: target frequency %f Mhz"
-    ) % (target_freq/1e6) << std::endl;
-
-    //map prescaler setting to mininmum integer divider (N) values (pg.18 prescaler)
-    static const uhd::dict<int, int> prescaler_to_min_int_div = map_list_of
-        (0,23) //adf4350_regs_t::PRESCALER_4_5
-        (1,75) //adf4350_regs_t::PRESCALER_8_9
-    ;
-
-    //map rf divider select output dividers to enums
-    static const uhd::dict<int, adf4350_regs_t::rf_divider_select_t> rfdivsel_to_enum = map_list_of
-        (1,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV1)
-        (2,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV2)
-        (4,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV4)
-        (8,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV8)
-        (16, adf4350_regs_t::RF_DIVIDER_SELECT_DIV16)
-    ;
-
-    double actual_freq, pfd_freq;
-    double ref_freq = this->get_iface()->get_clock_rate(unit);
-    int R=0, BS=0, N=0, FRAC=0, MOD=0;
-    int RFdiv = 1;
-    adf4350_regs_t::reference_divide_by_2_t T     = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_DISABLED;
-    adf4350_regs_t::reference_doubler_t     D     = adf4350_regs_t::REFERENCE_DOUBLER_DISABLED;    
-
-    //Reference doubler for 50% duty cycle
-    // if ref_freq < 12.5MHz enable regs.reference_divide_by_2
-    if(ref_freq <= 12.5e6) D = adf4350_regs_t::REFERENCE_DOUBLER_ENABLED;
-
-    //increase RF divider until acceptable VCO frequency
-    //start with target_freq*2 because mixer has divide by 2
-    double vco_freq = target_freq*2;
-    while (vco_freq < 2.2e9) {
-        vco_freq *= 2;
-        RFdiv *= 2;
-    }
-
-    //use 8/9 prescaler for vco_freq > 3 GHz (pg.18 prescaler)
-    adf4350_regs_t::prescaler_t prescaler = vco_freq > 3e9 ? adf4350_regs_t::PRESCALER_8_9 : adf4350_regs_t::PRESCALER_4_5;
-
-    /*
-     * The goal here is to loop though possible R dividers,
-     * band select clock dividers, N (int) dividers, and FRAC 
-     * (frac) dividers.
-     *
-     * Calculate the N and F dividers for each set of values.
-     * The loop exists when it meets all of the constraints.
-     * The resulting loop values are loaded into the registers.
-     *
-     * from pg.21
-     *
-     * f_pfd = f_ref*(1+D)/(R*(1+T))
-     * f_vco = (N + (FRAC/MOD))*f_pfd
-     *    N = f_vco/f_pfd - FRAC/MOD = f_vco*((R*(T+1))/(f_ref*(1+D))) - FRAC/MOD
-     * f_rf = f_vco/RFdiv)
-     * f_actual = f_rf/2
-     */
-    for(R = 1; R <= 1023; R+=1){
-        //PFD input frequency = f_ref/R ... ignoring Reference doubler/divide-by-2 (D & T)
-        pfd_freq = ref_freq*(1+D)/(R*(1+T));
-
-        //keep the PFD frequency at or below 25MHz (Loop Filter Bandwidth)
-        if (pfd_freq > 25e6) continue;
-
-        //ignore fractional part of tuning
-        N = int(std::floor(vco_freq/pfd_freq));
-
-        //keep N > minimum int divider requirement
-        if (N < prescaler_to_min_int_div[prescaler]) continue;
-
-        for(BS=1; BS <= 255; BS+=1){
-            //keep the band select frequency at or below 100KHz
-            //constraint on band select clock
-            if (pfd_freq/BS > 100e3) continue;
-            goto done_loop;
-        }
-    } done_loop:
-
-    //Fractional-N calculation
-    MOD = 4095; //max fractional accuracy
-    FRAC = int((vco_freq/pfd_freq - N)*MOD);
-
-    //Reference divide-by-2 for 50% duty cycle
-    // if R even, move one divide by 2 to to regs.reference_divide_by_2
-    if(R % 2 == 0){
-        T = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_ENABLED;
-        R /= 2;
-    }
-
-    //actual frequency calculation
-    actual_freq = double((N + (double(FRAC)/double(MOD)))*ref_freq*(1+int(D))/(R*(1+int(T)))/RFdiv/2);
-
-
-    UHD_LOGV(often)
-        << boost::format("WBX Intermediates: ref=%0.2f, outdiv=%f, fbdiv=%f") % (ref_freq*(1+int(D))/(R*(1+int(T)))) % double(RFdiv*2) % double(N + double(FRAC)/double(MOD)) << std::endl
-
-        << boost::format("WBX tune: R=%d, BS=%d, N=%d, FRAC=%d, MOD=%d, T=%d, D=%d, RFdiv=%d, LD=%d"
-            ) % R % BS % N % FRAC % MOD % T % D % RFdiv % get_locked(unit)<< std::endl
-        << boost::format("WBX Frequencies (MHz): REQ=%0.2f, ACT=%0.2f, VCO=%0.2f, PFD=%0.2f, BAND=%0.2f"
-            ) % (target_freq/1e6) % (actual_freq/1e6) % (vco_freq/1e6) % (pfd_freq/1e6) % (pfd_freq/BS/1e6) << std::endl;
-
-    //load the register values
-    adf4350_regs_t regs;
-
-    regs.frac_12_bit = FRAC;
-    regs.int_16_bit = N;
-    regs.mod_12_bit = MOD;
-    regs.prescaler = prescaler;
-    regs.r_counter_10_bit = R;
-    regs.reference_divide_by_2 = T;
-    regs.reference_doubler = D;
-    regs.band_select_clock_div = BS;
-    UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
-    regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
-
-    if (unit == dboard_iface::UNIT_RX) {
-        freq_range_t rx_lo_5dbm = list_of
-            (range_t(0.05e9, 1.4e9))
-        ;
-
-        freq_range_t rx_lo_2dbm = list_of
-            (range_t(1.4e9, 2.2e9))
-        ;
-
-        if (actual_freq == rx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
-
-        if (actual_freq == rx_lo_2dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_2DBM;
-
-    } else if (unit == dboard_iface::UNIT_TX) {
-        freq_range_t tx_lo_5dbm = list_of
-            (range_t(0.05e9, 1.7e9))
-            (range_t(1.9e9, 2.2e9))
-        ;
-
-        freq_range_t tx_lo_m1dbm = list_of
-            (range_t(1.7e9, 1.9e9))
-        ;
-
-        if (actual_freq == tx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
-
-        if (actual_freq == tx_lo_m1dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_M1DBM;
-
-    }
-
-    //write the registers
-    //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
-    int addr;
-
-    for(addr=5; addr>=0; addr--){
-        UHD_LOGV(often) << boost::format(
-            "WBX SPI Reg (0x%02x): 0x%08x"
-        ) % addr % regs.get_reg(addr) << std::endl;
-        this->get_iface()->write_spi(
-            unit, spi_config_t::EDGE_RISE,
-            regs.get_reg(addr), 32
-        );
-    }
+freq_range_t wbx_base::get_freq_range(void) {
+    return db_actual->get_freq_range();
+}
 
-    //return the actual frequency
-    UHD_LOGV(often) << boost::format(
-        "WBX tune: actual frequency %f Mhz"
-    ) % (actual_freq/1e6) << std::endl;
-    return actual_freq;
+double wbx_base::set_lo_freq(dboard_iface::unit_t unit, double target_freq) {
+    return db_actual->set_lo_freq(unit, target_freq);
 }
 
 bool wbx_base::get_locked(dboard_iface::unit_t unit){
     return (this->get_iface()->read_gpio(unit) & LOCKDET_MASK) != 0;
 }
 
-bool wbx_base::is_v3(void){
-    return get_rx_id().to_uint16() == 0x057;
-}
 
 /***********************************************************************
  * RX Get and Set
@@ -552,84 +229,7 @@ void wbx_base::rx_set(const wax::obj &key_, const wax::obj &val){
  * TX Get and Set
  **********************************************************************/
 void wbx_base::tx_get(const wax::obj &key_, wax::obj &val){
-    named_prop_t key = named_prop_t::extract(key_);
-
-    //handle the get request conditioned on the key
-    switch(key.as<subdev_prop_t>()){
-    case SUBDEV_PROP_NAME:
-        val = get_tx_id().to_pp_string();
-        return;
-
-    case SUBDEV_PROP_OTHERS:
-        val = prop_names_t(); //empty
-        return;
-
-    case SUBDEV_PROP_GAIN:
-        assert_has(_tx_gains.keys(), key.name, "wbx tx gain name");
-        val = _tx_gains[key.name];
-        return;
-
-    case SUBDEV_PROP_GAIN_RANGE:
-        if (is_v3()) {
-            assert_has(wbx_v3_tx_gain_ranges.keys(), key.name, "wbx tx gain name");
-            val = wbx_v3_tx_gain_ranges[key.name];
-        }
-        else {
-            assert_has(wbx_tx_gain_ranges.keys(), key.name, "wbx tx gain name");
-            val = wbx_tx_gain_ranges[key.name];
-        }
-        return;
-
-    case SUBDEV_PROP_GAIN_NAMES:
-        if (is_v3())
-            val = prop_names_t(wbx_v3_tx_gain_ranges.keys());
-        else
-            val = prop_names_t(wbx_tx_gain_ranges.keys());
-        return;
-
-    case SUBDEV_PROP_FREQ:
-        val = 0.0;
-        return;
-
-    case SUBDEV_PROP_FREQ_RANGE:
-        val = freq_range_t(0.0, 0.0, 0.0);
-        return;
-
-    case SUBDEV_PROP_ANTENNA:
-        val = std::string("");
-        return;
-
-    case SUBDEV_PROP_ANTENNA_NAMES:
-        val = prop_names_t(1, "");
-        return;
-
-    case SUBDEV_PROP_CONNECTION:
-        val = SUBDEV_CONN_COMPLEX_IQ;
-        return;
-
-    case SUBDEV_PROP_ENABLED:
-        val = _tx_enabled;
-        return;
-
-    case SUBDEV_PROP_USE_LO_OFFSET:
-        val = false;
-        return;
-
-    case SUBDEV_PROP_SENSOR:
-        UHD_ASSERT_THROW(key.name == "lo_locked");
-        val = sensor_value_t("LO", this->get_locked(dboard_iface::UNIT_TX), "locked", "unlocked");
-        return;
-
-    case SUBDEV_PROP_SENSOR_NAMES:
-        val = prop_names_t(1, "lo_locked");
-        return;
-
-    case SUBDEV_PROP_BANDWIDTH:
-        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
-        return;
-
-    default: UHD_THROW_PROP_GET_ERROR();
-    }
+    db_actual->tx_get(key_, val);
 }
 
 void wbx_base::tx_set(const wax::obj &key_, const wax::obj &val){
@@ -654,3 +254,5 @@ void wbx_base::tx_set(const wax::obj &key_, const wax::obj &val){
     default: UHD_THROW_PROP_SET_ERROR();
     }
 }
+
+
diff --git a/host/lib/usrp/dboard/db_wbx_common.hpp b/host/lib/usrp/dboard/db_wbx_common.hpp
index 5d33ddce9..57e2a0fe6 100644
--- a/host/lib/usrp/dboard/db_wbx_common.hpp
+++ b/host/lib/usrp/dboard/db_wbx_common.hpp
@@ -18,14 +18,74 @@
 #ifndef INCLUDED_LIBUHD_USRP_DBOARD_DB_WBX_COMMON_HPP
 #define INCLUDED_LIBUHD_USRP_DBOARD_DB_WBX_COMMON_HPP
 
-#include "adf4350_regs.hpp"
+// Common IO Pins
+#define ADF4350_CE      (1 << 3)
+#define ADF4350_PDBRF   (1 << 2)
+#define ADF4350_MUXOUT  (1 << 1)                // INPUT!!!
+#define ADF4351_CE      (1 << 3)
+#define ADF4351_PDBRF   (1 << 2)
+#define ADF4351_MUXOUT  (1 << 1)                // INPUT!!!
+
+#define LOCKDET_MASK    (1 << 0)                // INPUT!!!
+
+// TX IO Pins
+#define TX_PUP_5V       (1 << 7)                // enables 5.0V power supply
+#define TX_PUP_3V       (1 << 6)                // enables 3.3V supply
+#define TXMOD_EN        (1 << 4)                // on UNIT_TX, 1 enables TX Modulator
+
+// RX IO Pins
+#define RX_PUP_5V       (1 << 7)                // enables 5.0V power supply
+#define RX_PUP_3V       (1 << 6)                // enables 3.3V supply
+#define RXBB_PDB        (1 << 4)                // on UNIT_RX, 1 powers up RX baseband
+
+// RX Attenuator Pins
+#define RX_ATTN_SHIFT   8                       // lsb of RX Attenuator Control
+#define RX_ATTN_MASK    (63 << RX_ATTN_SHIFT)      // valid bits of RX Attenuator Control
+
+// TX Attenuator Pins (v3 only)
+#define TX_ATTN_16      (1 << 14)
+#define TX_ATTN_8       (1 << 5)
+#define TX_ATTN_4       (1 << 4)
+#define TX_ATTN_2       (1 << 3)
+#define TX_ATTN_1       (1 << 1)
+#define TX_ATTN_MASK    (TX_ATTN_16|TX_ATTN_8|TX_ATTN_4|TX_ATTN_2|TX_ATTN_1)      // valid bits of TX Attenuator Control
+
+// Mixer functions
+#define TX_MIXER_ENB    (TXMOD_EN|ADF4350_PDBRF)    // for v3, TXMOD_EN tied to ADF4350_PDBRF rather than separate
+#define TX_MIXER_DIS    0
+
+#define RX_MIXER_ENB    (RXBB_PDB|ADF4350_PDBRF)
+#define RX_MIXER_DIS    0
+
+// Power functions
+#define TX_POWER_UP     (TX_PUP_5V|TX_PUP_3V) // high enables power supply
+#define TX_POWER_DOWN   0
+
+#define RX_POWER_UP     (RX_PUP_5V|RX_PUP_3V|ADF4350_CE) // high enables power supply
+#define RX_POWER_DOWN   0
+
+
 #include <uhd/types/dict.hpp>
 #include <uhd/types/ranges.hpp>
+#include <uhd/utils/log.hpp>
 #include <uhd/utils/props.hpp>
+#include <uhd/utils/static.hpp>
 #include <uhd/usrp/dboard_base.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/format.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/math/special_functions/round.hpp>
 
 namespace uhd{ namespace usrp{
 
+
+/***********************************************************************
+ * The WBX Common dboard constants
+ **********************************************************************/
+static const uhd::dict<std::string, gain_range_t> wbx_rx_gain_ranges = boost::assign::map_list_of
+    ("PGA0", gain_range_t(0, 31.5, 0.5));
+
+
 /***********************************************************************
  * The WBX dboard base class
  **********************************************************************/
@@ -41,11 +101,17 @@ protected:
     virtual void set_rx_enabled(bool enb);
     virtual void set_tx_enabled(bool enb);
 
-    void rx_get(const wax::obj &key, wax::obj &val);
-    void rx_set(const wax::obj &key, const wax::obj &val);
+    virtual void rx_get(const wax::obj &key, wax::obj &val);
+    virtual void rx_set(const wax::obj &key, const wax::obj &val);
 
-    void tx_get(const wax::obj &key, wax::obj &val);
-    void tx_set(const wax::obj &key, const wax::obj &val);
+    virtual void tx_get(const wax::obj &key, wax::obj &val);
+    virtual void tx_set(const wax::obj &key, const wax::obj &val);
+
+    /*!
+     * Retrieve the frequency range of the board.
+     * \return the frequency range as a freq_range_t
+     */
+    virtual freq_range_t get_freq_range(void);
 
     /*!
      * Set the LO frequency for the particular dboard unit.
@@ -57,22 +123,110 @@ protected:
 
     /*!
      * Get the lock detect status of the LO.
+     *
+     * This operation is identical for all versions of the WBX board.
      * \param unit which unit rx or tx
      * \return true for locked
      */
     virtual bool get_locked(dboard_iface::unit_t unit);
 
+
     /*!
-     * Detect if this a v3 WBX
-     * \return true for locked
+     * Version-agnostic ABC that wraps version-specific implementations of the
+     * WBX base daughterboard.
+     *
+     * This class is an abstract base class, and thus is impossible to
+     * instantiate.
      */
-    virtual bool is_v3(void);
+    class wbx_versionx {
+    public:
+        wbx_versionx() {}
+        ~wbx_versionx(void) {}
+
+        virtual void set_tx_gain(double gain, const std::string &name) = 0;
+        virtual void set_tx_enabled(bool enb) = 0;
+        virtual void tx_get(const wax::obj &key, wax::obj &val) = 0;
+        virtual freq_range_t get_freq_range(void) = 0;
+        virtual double set_lo_freq(dboard_iface::unit_t unit, double target_freq) = 0;
+    };
+
+
+    /*!
+     * Version 2 of the WBX Daughterboard
+     *
+     * Basically the original release of the DB.
+     */
+    class wbx_version2 : public wbx_versionx {
+    public:
+        wbx_version2(wbx_base *_self_wbx_base);
+        ~wbx_version2(void);
+
+        void set_tx_gain(double gain, const std::string &name);
+        void set_tx_enabled(bool enb);
+        void tx_get(const wax::obj &key, wax::obj &val);
+        freq_range_t get_freq_range(void);
+        double set_lo_freq(dboard_iface::unit_t unit, double target_freq);
+
+        /*! This is the registered instance of the wrapper class, wbx_base. */
+        wbx_base *self_base;
+    };
+
+    /*!
+     * Version 3 of the WBX Daughterboard
+     *
+     * Fixed a problem with the AGC from Version 2.
+     */
+    class wbx_version3 : public wbx_versionx {
+    public:
+        wbx_version3(wbx_base *_self_wbx_base);
+        ~wbx_version3(void);
+
+        void set_tx_gain(double gain, const std::string &name);
+        void set_tx_enabled(bool enb);
+        void tx_get(const wax::obj &key, wax::obj &val);
+        freq_range_t get_freq_range(void);
+        double set_lo_freq(dboard_iface::unit_t unit, double target_freq);
+
+        /*! This is the registered instance of the wrapper class, wbx_base. */
+        wbx_base *self_base;
+    };
+
+    /*!
+     * Version 4 of the WBX Daughterboard
+     *
+     * Upgrades the Frequnecy Synthensizer from ADF4350 to ADF4351.
+     */
+    class wbx_version4 : public wbx_versionx {
+    public:
+        wbx_version4(wbx_base *_self_wbx_base);
+        ~wbx_version4(void);
+
+        void set_tx_gain(double gain, const std::string &name);
+        void set_tx_enabled(bool enb);
+        void tx_get(const wax::obj &key, wax::obj &val);
+        freq_range_t get_freq_range(void);
+        double set_lo_freq(dboard_iface::unit_t unit, double target_freq);
+
+        /*! This is the registered instance of the wrapper class, wbx_base. */
+        wbx_base *self_base;
+    };
+
+    /*!
+     * Handle to the version-specific implementation of the WBX.
+     *
+     * Since many of this class's functions are dependent on the version of the
+     * WBX board, this class will instantiate an object of the appropriate
+     * wbx_version_* subclass, and invoke any relevant functions through that
+     * object.  This pointer is set to the proper object at construction time.
+     */
+    typedef boost::shared_ptr<wbx_versionx> wbx_versionx_sptr;
+    wbx_versionx_sptr db_actual;
 
-private:
     uhd::dict<std::string, double> _tx_gains, _rx_gains;
     bool _rx_enabled, _tx_enabled;
 };
 
+
 }} //namespace uhd::usrp
 
 #endif /* INCLUDED_LIBUHD_USRP_DBOARD_DB_WBX_COMMON_HPP */
diff --git a/host/lib/usrp/dboard/db_wbx_simple.cpp b/host/lib/usrp/dboard/db_wbx_simple.cpp
index 990bacbc8..789146854 100644
--- a/host/lib/usrp/dboard/db_wbx_simple.cpp
+++ b/host/lib/usrp/dboard/db_wbx_simple.cpp
@@ -32,15 +32,17 @@ using namespace uhd;
 using namespace uhd::usrp;
 using namespace boost::assign;
 
+
 /***********************************************************************
  * The WBX Simple dboard constants
  **********************************************************************/
-static const freq_range_t wbx_freq_range(68.75e6, 2.2e9);
-
 static const prop_names_t wbx_tx_antennas = list_of("TX/RX");
 
 static const prop_names_t wbx_rx_antennas = list_of("TX/RX")("RX2");
 
+//this will get set by a version-specific function call
+static freq_range_t wbx_freq_range(0.0, 0.0);
+
 /***********************************************************************
  * The WBX simple implementation
  **********************************************************************/
@@ -72,13 +74,19 @@ static dboard_base::sptr make_wbx_simple(dboard_base::ctor_args_t args){
     return dboard_base::sptr(new wbx_simple(args));
 }
 
+/***********************************************************************
+ * ID Numbers for WBX daughterboard combinations.
+ **********************************************************************/
 UHD_STATIC_BLOCK(reg_wbx_simple_dboards){
     dboard_manager::register_dboard(0x0053, 0x0052, &make_wbx_simple, "WBX");
     dboard_manager::register_dboard(0x0053, 0x004f, &make_wbx_simple, "WBX + Simple GDB");
     dboard_manager::register_dboard(0x0057, 0x0056, &make_wbx_simple, "WBX v3");
     dboard_manager::register_dboard(0x0057, 0x004f, &make_wbx_simple, "WBX v3 + Simple GDB");
+    dboard_manager::register_dboard(0x0063, 0x0062, &make_wbx_simple, "WBX v4");
+    dboard_manager::register_dboard(0x0063, 0x004f, &make_wbx_simple, "WBX v4 + Simple GDB");
 }
 
+
 /***********************************************************************
  * Structors
  **********************************************************************/
@@ -100,6 +108,9 @@ wbx_simple::wbx_simple(ctor_args_t args) : wbx_base(args){
     this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     ANT_RX2, ANTSW_IO);
     this->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, ANT_RX2, ANTSW_IO);
 
+    //get the frequency range of our WBX db
+    wbx_freq_range = this->get_freq_range();
+
     //set some default values
     set_rx_lo_freq((wbx_freq_range.start() + wbx_freq_range.stop())/2.0);
     set_tx_lo_freq((wbx_freq_range.start() + wbx_freq_range.stop())/2.0);
@@ -149,11 +160,19 @@ void wbx_simple::rx_get(const wax::obj &key_, wax::obj &val){
     //handle the get request conditioned on the key
     switch(key.as<subdev_prop_t>()){
     case SUBDEV_PROP_NAME:
-        if (is_v3())
-            val = std::string("WBX v3 RX + Simple GDB");
-        else
+        switch(get_rx_id().to_uint16()) {
+        case 0x053:
             val = std::string("WBX RX + Simple GDB");
-        return;
+            return;
+        case 0x057:
+            val = std::string("WBX v3 RX + Simple GDB");
+            return;
+        case 0x063:
+            val = std::string("WBX v4 RX + Simple GDB");
+            return;
+        default:
+            UHD_THROW_INVALID_CODE_PATH();
+        }
 
     case SUBDEV_PROP_FREQ:
         val = _rx_lo_freq;
@@ -206,11 +225,19 @@ void wbx_simple::tx_get(const wax::obj &key_, wax::obj &val){
     //handle the get request conditioned on the key
     switch(key.as<subdev_prop_t>()){
     case SUBDEV_PROP_NAME:
-        if (is_v3())
-            val = std::string("WBX v3 TX + Simple GDB");
-        else
+        switch(get_rx_id().to_uint16()) {
+        case 0x053:
             val = std::string("WBX TX + Simple GDB");
-        return;
+            return;
+        case 0x057:
+            val = std::string("WBX v3 TX + Simple GDB");
+            return;
+        case 0x063:
+            val = std::string("WBX v4 TX + Simple GDB");
+            return;
+        default:
+            UHD_THROW_INVALID_CODE_PATH();
+        }
 
     case SUBDEV_PROP_FREQ:
         val = _tx_lo_freq;
diff --git a/host/lib/usrp/dboard/db_wbx_version2.cpp b/host/lib/usrp/dboard/db_wbx_version2.cpp
new file mode 100644
index 000000000..0b57a6e2d
--- /dev/null
+++ b/host/lib/usrp/dboard/db_wbx_version2.cpp
@@ -0,0 +1,394 @@
+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "db_wbx_common.hpp"
+#include "adf4350_regs.hpp"
+#include <uhd/utils/log.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/types/ranges.hpp>
+#include <uhd/types/sensors.hpp>
+#include <uhd/utils/assert_has.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/usrp/dboard_base.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/format.hpp>
+#include <boost/math/special_functions/round.hpp>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace boost::assign;
+
+
+/***********************************************************************
+ * WBX Version 2 Constants
+ **********************************************************************/
+static const uhd::dict<std::string, gain_range_t> wbx_v2_tx_gain_ranges = map_list_of
+    ("PGA0", gain_range_t(0, 25, 0.05))
+;
+
+static const freq_range_t wbx_v2_freq_range(68.75e6, 2.2e9);
+
+/***********************************************************************
+ * Gain-related functions
+ **********************************************************************/
+static double tx_pga0_gain_to_dac_volts(double &gain){
+    //clip the input
+    gain = wbx_v2_tx_gain_ranges["PGA0"].clip(gain);
+
+    //voltage level constants
+    static const double max_volts = 0.5, min_volts = 1.4;
+    static const double slope = (max_volts-min_volts)/wbx_v2_tx_gain_ranges["PGA0"].stop();
+
+    //calculate the voltage for the aux dac
+    double dac_volts = gain*slope + min_volts;
+
+    UHD_LOGV(often) << boost::format(
+        "WBX TX Gain: %f dB, dac_volts: %f V"
+    ) % gain % dac_volts << std::endl;
+
+    //the actual gain setting
+    gain = (dac_volts - min_volts)/slope;
+
+    return dac_volts;
+}
+
+
+/***********************************************************************
+ * WBX Version 2 Implementation
+ **********************************************************************/
+wbx_base::wbx_version2::wbx_version2(wbx_base *_self_wbx_base) {
+    //register our handle on the primary wbx_base instance
+    self_base = _self_wbx_base;
+
+    //enable the clocks that we need
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_TX, true);
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_RX, true);
+
+    //set attenuator control bits
+    int v2_iobits = ADF4350_CE;
+    int v2_tx_mod = TXMOD_EN|ADF4350_PDBRF;
+
+    //set the gpio directions and atr controls
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_TX, v2_tx_mod);
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_RX, RXBB_PDB|ADF4350_PDBRF);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_TX, TX_PUP_5V|TX_PUP_3V|v2_tx_mod|v2_iobits);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_RX, RX_PUP_5V|RX_PUP_3V|ADF4350_CE|RXBB_PDB|ADF4350_PDBRF|RX_ATTN_MASK);
+
+    //setup ATR for the mixer enables (always enabled to prevent phase slip between bursts)
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE,        v2_tx_mod, TX_MIXER_DIS | v2_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_RX_ONLY,     v2_tx_mod, TX_MIXER_DIS | v2_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_TX_ONLY,     v2_tx_mod, TX_MIXER_DIS | v2_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_FULL_DUPLEX, v2_tx_mod, TX_MIXER_DIS | v2_tx_mod);
+
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE,        RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_RX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+
+    BOOST_FOREACH(const std::string &name, wbx_v2_tx_gain_ranges.keys()) {
+        set_tx_gain(wbx_v2_tx_gain_ranges[name].start(), name);
+    }
+
+    BOOST_FOREACH(const std::string &name, wbx_rx_gain_ranges.keys()) {
+        self_base->set_rx_gain(wbx_rx_gain_ranges[name].start(), name);
+    }
+
+    self_base->set_rx_enabled(false);
+    set_tx_enabled(false);
+}
+
+wbx_base::wbx_version2::~wbx_version2(void){
+    /* NOP */
+}
+
+/***********************************************************************
+ * Enables
+ **********************************************************************/
+
+void wbx_base::wbx_version2::set_tx_enabled(bool enb){
+    self_base->get_iface()->set_gpio_out(dboard_iface::UNIT_TX,
+        (enb)? TX_POWER_UP | ADF4350_CE : TX_POWER_DOWN, TX_POWER_UP | TX_POWER_DOWN | ADF4350_CE);
+}
+
+
+/***********************************************************************
+ * Gain Handling
+ **********************************************************************/
+void wbx_base::wbx_version2::set_tx_gain(double gain, const std::string &name){
+    assert_has(wbx_v2_tx_gain_ranges.keys(), name, "wbx tx gain name");
+    if(name == "PGA0"){
+        double dac_volts = tx_pga0_gain_to_dac_volts(gain);
+        self_base->_tx_gains[name] = gain;
+
+        //write the new voltage to the aux dac
+        self_base->get_iface()->write_aux_dac(dboard_iface::UNIT_TX, dboard_iface::AUX_DAC_A, dac_volts);
+    }
+    else UHD_THROW_INVALID_CODE_PATH();
+}
+
+
+/***********************************************************************
+ * Tuning
+ **********************************************************************/
+freq_range_t wbx_base::wbx_version2::get_freq_range(void) {
+    return wbx_v2_freq_range;
+}
+
+double wbx_base::wbx_version2::set_lo_freq(dboard_iface::unit_t unit, double target_freq) {
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: target frequency %f Mhz"
+    ) % (target_freq/1e6) << std::endl;
+
+    //map prescaler setting to mininmum integer divider (N) values (pg.18 prescaler)
+    static const uhd::dict<int, int> prescaler_to_min_int_div = map_list_of
+        (0,23) //adf4350_regs_t::PRESCALER_4_5
+        (1,75) //adf4350_regs_t::PRESCALER_8_9
+    ;
+
+    //map rf divider select output dividers to enums
+    static const uhd::dict<int, adf4350_regs_t::rf_divider_select_t> rfdivsel_to_enum = map_list_of
+        (1,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV1)
+        (2,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV2)
+        (4,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV4)
+        (8,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV8)
+        (16, adf4350_regs_t::RF_DIVIDER_SELECT_DIV16)
+    ;
+
+    double actual_freq, pfd_freq;
+    double ref_freq = self_base->get_iface()->get_clock_rate(unit);
+    int R=0, BS=0, N=0, FRAC=0, MOD=0;
+    int RFdiv = 1;
+    adf4350_regs_t::reference_divide_by_2_t T     = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_DISABLED;
+    adf4350_regs_t::reference_doubler_t     D     = adf4350_regs_t::REFERENCE_DOUBLER_DISABLED;    
+
+    //Reference doubler for 50% duty cycle
+    // if ref_freq < 12.5MHz enable regs.reference_divide_by_2
+    if(ref_freq <= 12.5e6) D = adf4350_regs_t::REFERENCE_DOUBLER_ENABLED;
+
+    //increase RF divider until acceptable VCO frequency
+    //start with target_freq*2 because mixer has divide by 2
+    double vco_freq = target_freq*2;
+    while (vco_freq < 2.2e9) {
+        vco_freq *= 2;
+        RFdiv *= 2;
+    }
+
+    //use 8/9 prescaler for vco_freq > 3 GHz (pg.18 prescaler)
+    adf4350_regs_t::prescaler_t prescaler = vco_freq > 3e9 ? adf4350_regs_t::PRESCALER_8_9 : adf4350_regs_t::PRESCALER_4_5;
+
+    /*
+     * The goal here is to loop though possible R dividers,
+     * band select clock dividers, N (int) dividers, and FRAC 
+     * (frac) dividers.
+     *
+     * Calculate the N and F dividers for each set of values.
+     * The loop exists when it meets all of the constraints.
+     * The resulting loop values are loaded into the registers.
+     *
+     * from pg.21
+     *
+     * f_pfd = f_ref*(1+D)/(R*(1+T))
+     * f_vco = (N + (FRAC/MOD))*f_pfd
+     *    N = f_vco/f_pfd - FRAC/MOD = f_vco*((R*(T+1))/(f_ref*(1+D))) - FRAC/MOD
+     * f_rf = f_vco/RFdiv)
+     * f_actual = f_rf/2
+     */
+    for(R = 1; R <= 1023; R+=1){
+        //PFD input frequency = f_ref/R ... ignoring Reference doubler/divide-by-2 (D & T)
+        pfd_freq = ref_freq*(1+D)/(R*(1+T));
+
+        //keep the PFD frequency at or below 25MHz (Loop Filter Bandwidth)
+        if (pfd_freq > 25e6) continue;
+
+        //ignore fractional part of tuning
+        N = int(std::floor(vco_freq/pfd_freq));
+
+        //keep N > minimum int divider requirement
+        if (N < prescaler_to_min_int_div[prescaler]) continue;
+
+        for(BS=1; BS <= 255; BS+=1){
+            //keep the band select frequency at or below 100KHz
+            //constraint on band select clock
+            if (pfd_freq/BS > 100e3) continue;
+            goto done_loop;
+        }
+    } done_loop:
+
+    //Fractional-N calculation
+    MOD = 4095; //max fractional accuracy
+    FRAC = int((vco_freq/pfd_freq - N)*MOD);
+
+    //Reference divide-by-2 for 50% duty cycle
+    // if R even, move one divide by 2 to to regs.reference_divide_by_2
+    if(R % 2 == 0){
+        T = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_ENABLED;
+        R /= 2;
+    }
+
+    //actual frequency calculation
+    actual_freq = double((N + (double(FRAC)/double(MOD)))*ref_freq*(1+int(D))/(R*(1+int(T)))/RFdiv/2);
+
+
+    UHD_LOGV(often)
+        << boost::format("WBX Intermediates: ref=%0.2f, outdiv=%f, fbdiv=%f") % (ref_freq*(1+int(D))/(R*(1+int(T)))) % double(RFdiv*2) % double(N + double(FRAC)/double(MOD)) << std::endl
+
+        << boost::format("WBX tune: R=%d, BS=%d, N=%d, FRAC=%d, MOD=%d, T=%d, D=%d, RFdiv=%d, LD=%d"
+            ) % R % BS % N % FRAC % MOD % T % D % RFdiv % self_base->get_locked(unit)<< std::endl
+        << boost::format("WBX Frequencies (MHz): REQ=%0.2f, ACT=%0.2f, VCO=%0.2f, PFD=%0.2f, BAND=%0.2f"
+            ) % (target_freq/1e6) % (actual_freq/1e6) % (vco_freq/1e6) % (pfd_freq/1e6) % (pfd_freq/BS/1e6) << std::endl;
+
+    //load the register values
+    adf4350_regs_t regs;
+
+    regs.frac_12_bit = FRAC;
+    regs.int_16_bit = N;
+    regs.mod_12_bit = MOD;
+    regs.prescaler = prescaler;
+    regs.r_counter_10_bit = R;
+    regs.reference_divide_by_2 = T;
+    regs.reference_doubler = D;
+    regs.band_select_clock_div = BS;
+    UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
+    regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
+
+    if (unit == dboard_iface::UNIT_RX) {
+        freq_range_t rx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.4e9))
+        ;
+
+        freq_range_t rx_lo_2dbm = list_of
+            (range_t(1.4e9, 2.2e9))
+        ;
+
+        if (actual_freq == rx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == rx_lo_2dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_2DBM;
+
+    } else if (unit == dboard_iface::UNIT_TX) {
+        freq_range_t tx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.7e9))
+            (range_t(1.9e9, 2.2e9))
+        ;
+
+        freq_range_t tx_lo_m1dbm = list_of
+            (range_t(1.7e9, 1.9e9))
+        ;
+
+        if (actual_freq == tx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == tx_lo_m1dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_M1DBM;
+
+    }
+
+    //write the registers
+    //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
+    int addr;
+
+    for(addr=5; addr>=0; addr--){
+        UHD_LOGV(often) << boost::format(
+            "WBX SPI Reg (0x%02x): 0x%08x"
+        ) % addr % regs.get_reg(addr) << std::endl;
+        self_base->get_iface()->write_spi(
+            unit, spi_config_t::EDGE_RISE,
+            regs.get_reg(addr), 32
+        );
+    }
+
+    //return the actual frequency
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: actual frequency %f Mhz"
+    ) % (actual_freq/1e6) << std::endl;
+    return actual_freq;
+}
+
+
+/***********************************************************************
+ * TX Get and Set
+ **********************************************************************/
+void wbx_base::wbx_version2::tx_get(const wax::obj &key_, wax::obj &val){
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+    case SUBDEV_PROP_NAME:
+        val = self_base->get_tx_id().to_pp_string();
+        return;
+
+    case SUBDEV_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        assert_has(self_base->_tx_gains.keys(), key.name, "wbx tx gain name");
+        val = self_base->_tx_gains[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_RANGE:
+        assert_has(wbx_v2_tx_gain_ranges.keys(), key.name, "wbx tx gain name");
+        val = wbx_v2_tx_gain_ranges[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_NAMES:
+        val = prop_names_t(wbx_v2_tx_gain_ranges.keys());
+        return;
+
+    case SUBDEV_PROP_FREQ:
+        val = 0.0;
+        return;
+
+    case SUBDEV_PROP_FREQ_RANGE:
+        val = freq_range_t(0.0, 0.0, 0.0);
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        val = std::string("");
+        return;
+
+    case SUBDEV_PROP_ANTENNA_NAMES:
+        val = prop_names_t(1, "");
+        return;
+
+    case SUBDEV_PROP_CONNECTION:
+        val = SUBDEV_CONN_COMPLEX_IQ;
+        return;
+
+    case SUBDEV_PROP_ENABLED:
+        val = self_base->_tx_enabled;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_SENSOR:
+        UHD_ASSERT_THROW(key.name == "lo_locked");
+        val = sensor_value_t("LO", self_base->get_locked(dboard_iface::UNIT_TX), "locked", "unlocked");
+        return;
+
+    case SUBDEV_PROP_SENSOR_NAMES:
+        val = prop_names_t(1, "lo_locked");
+        return;
+
+    case SUBDEV_PROP_BANDWIDTH:
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
diff --git a/host/lib/usrp/dboard/db_wbx_version3.cpp b/host/lib/usrp/dboard/db_wbx_version3.cpp
new file mode 100644
index 000000000..3c5cdf5ba
--- /dev/null
+++ b/host/lib/usrp/dboard/db_wbx_version3.cpp
@@ -0,0 +1,401 @@
+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "db_wbx_common.hpp"
+#include "adf4350_regs.hpp"
+#include <uhd/utils/log.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/types/ranges.hpp>
+#include <uhd/types/sensors.hpp>
+#include <uhd/utils/assert_has.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/usrp/dboard_base.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/format.hpp>
+#include <boost/math/special_functions/round.hpp>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace boost::assign;
+
+
+/***********************************************************************
+ * WBX Version 3 Constants
+ **********************************************************************/
+static const uhd::dict<std::string, gain_range_t> wbx_v3_tx_gain_ranges = map_list_of
+    ("PGA0", gain_range_t(0, 31, 1.0))
+;
+
+static const freq_range_t wbx_v3_freq_range(68.75e6, 2.2e9);
+
+/***********************************************************************
+ * Gain-related functions
+ **********************************************************************/
+static int tx_pga0_gain_to_iobits(double &gain){
+    //clip the input
+    gain = wbx_v3_tx_gain_ranges["PGA0"].clip(gain);
+
+    //convert to attenuation
+    double attn = wbx_v3_tx_gain_ranges["PGA0"].stop() - gain;
+
+    //calculate the attenuation
+    int attn_code = boost::math::iround(attn);
+    int iobits = (
+            (attn_code & 16 ? 0 : TX_ATTN_16) |
+            (attn_code &  8 ? 0 : TX_ATTN_8) |
+            (attn_code &  4 ? 0 : TX_ATTN_4) |
+            (attn_code &  2 ? 0 : TX_ATTN_2) |
+            (attn_code &  1 ? 0 : TX_ATTN_1) 
+        ) & TX_ATTN_MASK;
+
+    UHD_LOGV(often) << boost::format(
+        "WBX TX Attenuation: %f dB, Code: %d, IO Bits %x, Mask: %x"
+    ) % attn % attn_code % (iobits & TX_ATTN_MASK) % TX_ATTN_MASK << std::endl;
+
+    //the actual gain setting
+    gain = wbx_v3_tx_gain_ranges["PGA0"].stop() - double(attn_code);
+
+    return iobits;
+}
+
+
+/***********************************************************************
+ * WBX Common Implementation
+ **********************************************************************/
+wbx_base::wbx_version3::wbx_version3(wbx_base *_self_wbx_base) {
+    //register our handle on the primary wbx_base instance
+    self_base = _self_wbx_base;
+
+    //enable the clocks that we need
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_TX, true);
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_RX, true);
+
+    //set attenuator control bits
+    int v3_iobits = TX_ATTN_MASK;
+    int v3_tx_mod = ADF4350_PDBRF;
+
+    //set the gpio directions and atr controls
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_TX, v3_tx_mod);
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_RX, RXBB_PDB|ADF4350_PDBRF);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_TX, TX_PUP_5V|TX_PUP_3V|v3_tx_mod|v3_iobits);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_RX, RX_PUP_5V|RX_PUP_3V|ADF4350_CE|RXBB_PDB|ADF4350_PDBRF|RX_ATTN_MASK);
+
+    //setup ATR for the mixer enables (always enabled to prevent phase slip between bursts)
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE,        v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_RX_ONLY,     v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_TX_ONLY,     v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_FULL_DUPLEX, v3_tx_mod, TX_MIXER_DIS | v3_tx_mod);
+
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE,        RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_RX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+
+    //set some default values
+    BOOST_FOREACH(const std::string &name, wbx_v3_tx_gain_ranges.keys()){
+        set_tx_gain(wbx_v3_tx_gain_ranges[name].start(), name);
+    }
+
+    BOOST_FOREACH(const std::string &name, wbx_rx_gain_ranges.keys()){
+        self_base->set_rx_gain(wbx_rx_gain_ranges[name].start(), name);
+    }
+
+    self_base->set_rx_enabled(false);
+    set_tx_enabled(false);
+}
+
+wbx_base::wbx_version3::~wbx_version3(void){
+    /* NOP */
+}
+
+
+/***********************************************************************
+ * Enables
+ **********************************************************************/
+void wbx_base::wbx_version3::set_tx_enabled(bool enb){
+    self_base->get_iface()->set_gpio_out(dboard_iface::UNIT_TX,
+        (enb)? TX_POWER_UP | ADF4350_CE : TX_POWER_DOWN, TX_POWER_UP | TX_POWER_DOWN | 0);
+}
+
+
+/***********************************************************************
+ * Gain Handling
+ **********************************************************************/
+void wbx_base::wbx_version3::set_tx_gain(double gain, const std::string &name){
+    assert_has(wbx_v3_tx_gain_ranges.keys(), name, "wbx tx gain name");
+    if(name == "PGA0"){
+        boost::uint16_t io_bits = tx_pga0_gain_to_iobits(gain);
+        self_base->_tx_gains[name] = gain;
+
+        //write the new gain to tx gpio outputs
+        self_base->get_iface()->set_gpio_out(dboard_iface::UNIT_TX, io_bits, TX_ATTN_MASK);
+    }
+    else UHD_THROW_INVALID_CODE_PATH();
+}
+
+
+/***********************************************************************
+ * Tuning
+ **********************************************************************/
+freq_range_t wbx_base::wbx_version3::get_freq_range(void) {
+    return wbx_v3_freq_range;
+}
+
+double wbx_base::wbx_version3::set_lo_freq(dboard_iface::unit_t unit, double target_freq) {
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: target frequency %f Mhz"
+    ) % (target_freq/1e6) << std::endl;
+
+    //map prescaler setting to mininmum integer divider (N) values (pg.18 prescaler)
+    static const uhd::dict<int, int> prescaler_to_min_int_div = map_list_of
+        (0,23) //adf4350_regs_t::PRESCALER_4_5
+        (1,75) //adf4350_regs_t::PRESCALER_8_9
+    ;
+
+    //map rf divider select output dividers to enums
+    static const uhd::dict<int, adf4350_regs_t::rf_divider_select_t> rfdivsel_to_enum = map_list_of
+        (1,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV1)
+        (2,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV2)
+        (4,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV4)
+        (8,  adf4350_regs_t::RF_DIVIDER_SELECT_DIV8)
+        (16, adf4350_regs_t::RF_DIVIDER_SELECT_DIV16)
+    ;
+
+    double actual_freq, pfd_freq;
+    double ref_freq = self_base->get_iface()->get_clock_rate(unit);
+    int R=0, BS=0, N=0, FRAC=0, MOD=0;
+    int RFdiv = 1;
+    adf4350_regs_t::reference_divide_by_2_t T     = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_DISABLED;
+    adf4350_regs_t::reference_doubler_t     D     = adf4350_regs_t::REFERENCE_DOUBLER_DISABLED;    
+
+    //Reference doubler for 50% duty cycle
+    // if ref_freq < 12.5MHz enable regs.reference_divide_by_2
+    if(ref_freq <= 12.5e6) D = adf4350_regs_t::REFERENCE_DOUBLER_ENABLED;
+
+    //increase RF divider until acceptable VCO frequency
+    //start with target_freq*2 because mixer has divide by 2
+    double vco_freq = target_freq*2;
+    while (vco_freq < 2.2e9) {
+        vco_freq *= 2;
+        RFdiv *= 2;
+    }
+
+    //use 8/9 prescaler for vco_freq > 3 GHz (pg.18 prescaler)
+    adf4350_regs_t::prescaler_t prescaler = vco_freq > 3e9 ? adf4350_regs_t::PRESCALER_8_9 : adf4350_regs_t::PRESCALER_4_5;
+
+    /*
+     * The goal here is to loop though possible R dividers,
+     * band select clock dividers, N (int) dividers, and FRAC 
+     * (frac) dividers.
+     *
+     * Calculate the N and F dividers for each set of values.
+     * The loop exists when it meets all of the constraints.
+     * The resulting loop values are loaded into the registers.
+     *
+     * from pg.21
+     *
+     * f_pfd = f_ref*(1+D)/(R*(1+T))
+     * f_vco = (N + (FRAC/MOD))*f_pfd
+     *    N = f_vco/f_pfd - FRAC/MOD = f_vco*((R*(T+1))/(f_ref*(1+D))) - FRAC/MOD
+     * f_rf = f_vco/RFdiv)
+     * f_actual = f_rf/2
+     */
+    for(R = 1; R <= 1023; R+=1){
+        //PFD input frequency = f_ref/R ... ignoring Reference doubler/divide-by-2 (D & T)
+        pfd_freq = ref_freq*(1+D)/(R*(1+T));
+
+        //keep the PFD frequency at or below 25MHz (Loop Filter Bandwidth)
+        if (pfd_freq > 25e6) continue;
+
+        //ignore fractional part of tuning
+        N = int(std::floor(vco_freq/pfd_freq));
+
+        //keep N > minimum int divider requirement
+        if (N < prescaler_to_min_int_div[prescaler]) continue;
+
+        for(BS=1; BS <= 255; BS+=1){
+            //keep the band select frequency at or below 100KHz
+            //constraint on band select clock
+            if (pfd_freq/BS > 100e3) continue;
+            goto done_loop;
+        }
+    } done_loop:
+
+    //Fractional-N calculation
+    MOD = 4095; //max fractional accuracy
+    FRAC = int((vco_freq/pfd_freq - N)*MOD);
+
+    //Reference divide-by-2 for 50% duty cycle
+    // if R even, move one divide by 2 to to regs.reference_divide_by_2
+    if(R % 2 == 0){
+        T = adf4350_regs_t::REFERENCE_DIVIDE_BY_2_ENABLED;
+        R /= 2;
+    }
+
+    //actual frequency calculation
+    actual_freq = double((N + (double(FRAC)/double(MOD)))*ref_freq*(1+int(D))/(R*(1+int(T)))/RFdiv/2);
+
+
+    UHD_LOGV(often)
+        << boost::format("WBX Intermediates: ref=%0.2f, outdiv=%f, fbdiv=%f") % (ref_freq*(1+int(D))/(R*(1+int(T)))) % double(RFdiv*2) % double(N + double(FRAC)/double(MOD)) << std::endl
+
+        << boost::format("WBX tune: R=%d, BS=%d, N=%d, FRAC=%d, MOD=%d, T=%d, D=%d, RFdiv=%d, LD=%d"
+            ) % R % BS % N % FRAC % MOD % T % D % RFdiv % self_base->get_locked(unit)<< std::endl
+        << boost::format("WBX Frequencies (MHz): REQ=%0.2f, ACT=%0.2f, VCO=%0.2f, PFD=%0.2f, BAND=%0.2f"
+            ) % (target_freq/1e6) % (actual_freq/1e6) % (vco_freq/1e6) % (pfd_freq/1e6) % (pfd_freq/BS/1e6) << std::endl;
+
+    //load the register values
+    adf4350_regs_t regs;
+
+    regs.frac_12_bit = FRAC;
+    regs.int_16_bit = N;
+    regs.mod_12_bit = MOD;
+    regs.prescaler = prescaler;
+    regs.r_counter_10_bit = R;
+    regs.reference_divide_by_2 = T;
+    regs.reference_doubler = D;
+    regs.band_select_clock_div = BS;
+    UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
+    regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
+
+    if (unit == dboard_iface::UNIT_RX) {
+        freq_range_t rx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.4e9))
+        ;
+
+        freq_range_t rx_lo_2dbm = list_of
+            (range_t(1.4e9, 2.2e9))
+        ;
+
+        if (actual_freq == rx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == rx_lo_2dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_2DBM;
+
+    } else if (unit == dboard_iface::UNIT_TX) {
+        freq_range_t tx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.7e9))
+            (range_t(1.9e9, 2.2e9))
+        ;
+
+        freq_range_t tx_lo_m1dbm = list_of
+            (range_t(1.7e9, 1.9e9))
+        ;
+
+        if (actual_freq == tx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == tx_lo_m1dbm.clip(actual_freq)) regs.output_power = adf4350_regs_t::OUTPUT_POWER_M1DBM;
+
+    }
+
+    //write the registers
+    //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
+    int addr;
+
+    for(addr=5; addr>=0; addr--){
+        UHD_LOGV(often) << boost::format(
+            "WBX SPI Reg (0x%02x): 0x%08x"
+        ) % addr % regs.get_reg(addr) << std::endl;
+        self_base->get_iface()->write_spi(
+            unit, spi_config_t::EDGE_RISE,
+            regs.get_reg(addr), 32
+        );
+    }
+
+    //return the actual frequency
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: actual frequency %f Mhz"
+    ) % (actual_freq/1e6) << std::endl;
+    return actual_freq;
+}
+
+
+/***********************************************************************
+ * TX Get and Set
+ **********************************************************************/
+void wbx_base::wbx_version3::tx_get(const wax::obj &key_, wax::obj &val){
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+    case SUBDEV_PROP_NAME:
+        val = self_base->get_tx_id().to_pp_string();
+        return;
+
+    case SUBDEV_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        assert_has(self_base->_tx_gains.keys(), key.name, "wbx tx gain name");
+        val = self_base->_tx_gains[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_RANGE:
+        assert_has(wbx_v3_tx_gain_ranges.keys(), key.name, "wbx tx gain name");
+        val = wbx_v3_tx_gain_ranges[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_NAMES:
+        val = prop_names_t(wbx_v3_tx_gain_ranges.keys());
+        return;
+
+    case SUBDEV_PROP_FREQ:
+        val = 0.0;
+        return;
+
+    case SUBDEV_PROP_FREQ_RANGE:
+        val = freq_range_t(0.0, 0.0, 0.0);
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        val = std::string("");
+        return;
+
+    case SUBDEV_PROP_ANTENNA_NAMES:
+        val = prop_names_t(1, "");
+        return;
+
+    case SUBDEV_PROP_CONNECTION:
+        val = SUBDEV_CONN_COMPLEX_IQ;
+        return;
+
+    case SUBDEV_PROP_ENABLED:
+        val = self_base->_tx_enabled;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_SENSOR:
+        UHD_ASSERT_THROW(key.name == "lo_locked");
+        val = sensor_value_t("LO", self_base->get_locked(dboard_iface::UNIT_TX), "locked", "unlocked");
+        return;
+
+    case SUBDEV_PROP_SENSOR_NAMES:
+        val = prop_names_t(1, "lo_locked");
+        return;
+
+    case SUBDEV_PROP_BANDWIDTH:
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+
diff --git a/host/lib/usrp/dboard/db_wbx_version4.cpp b/host/lib/usrp/dboard/db_wbx_version4.cpp
new file mode 100644
index 000000000..b5104c9f1
--- /dev/null
+++ b/host/lib/usrp/dboard/db_wbx_version4.cpp
@@ -0,0 +1,404 @@
+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "db_wbx_common.hpp"
+#include "adf4351_regs.hpp"
+#include <uhd/utils/log.hpp>
+#include <uhd/types/dict.hpp>
+#include <uhd/types/ranges.hpp>
+#include <uhd/types/sensors.hpp>
+#include <uhd/utils/assert_has.hpp>
+#include <uhd/utils/algorithm.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/usrp/dboard_base.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/format.hpp>
+#include <boost/math/special_functions/round.hpp>
+
+using namespace uhd;
+using namespace uhd::usrp;
+using namespace boost::assign;
+
+
+/***********************************************************************
+ * WBX Version 3 Constants
+ **********************************************************************/
+static const uhd::dict<std::string, gain_range_t> wbx_v4_gain_ranges = map_list_of
+    ("PGA0", gain_range_t(0, 31, 1.0))
+;
+
+static const freq_range_t wbx_v4_freq_range(50.0e6, 2.2e9);
+
+
+/***********************************************************************
+ * Gain-related functions
+ **********************************************************************/
+static int tx_pga0_gain_to_iobits(double &gain){
+    //clip the input
+    gain = wbx_v4_gain_ranges["PGA0"].clip(gain);
+
+    //convert to attenuation
+    double attn = wbx_v4_gain_ranges["PGA0"].stop() - gain;
+
+    //calculate the attenuation
+    int attn_code = boost::math::iround(attn);
+    int iobits = (
+            (attn_code & 16 ? 0 : TX_ATTN_16) |
+            (attn_code &  8 ? 0 : TX_ATTN_8) |
+            (attn_code &  4 ? 0 : TX_ATTN_4) |
+            (attn_code &  2 ? 0 : TX_ATTN_2) |
+            (attn_code &  1 ? 0 : TX_ATTN_1) 
+        ) & TX_ATTN_MASK;
+
+    UHD_LOGV(often) << boost::format(
+        "WBX TX Attenuation: %f dB, Code: %d, IO Bits %x, Mask: %x"
+    ) % attn % attn_code % (iobits & TX_ATTN_MASK) % TX_ATTN_MASK << std::endl;
+
+    //the actual gain setting
+    gain = wbx_v4_gain_ranges["PGA0"].stop() - double(attn_code);
+
+    return iobits;
+}
+
+
+/***********************************************************************
+ * WBX Common Implementation
+ **********************************************************************/
+wbx_base::wbx_version4::wbx_version4(wbx_base *_self_wbx_base) {
+    //register our handle on the primary wbx_base instance
+    self_base = _self_wbx_base;
+
+    //enable the clocks that we need
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_TX, true);
+    self_base->get_iface()->set_clock_enabled(dboard_iface::UNIT_RX, true);
+
+    //set attenuator control bits
+    int v4_iobits = TX_ATTN_MASK;
+    int v4_tx_mod = ADF4351_PDBRF;
+
+    //set the gpio directions and atr controls
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_TX, v4_tx_mod);
+    self_base->get_iface()->set_pin_ctrl(dboard_iface::UNIT_RX, RXBB_PDB|ADF4351_PDBRF);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_TX, TX_PUP_5V|TX_PUP_3V|v4_tx_mod|v4_iobits);
+    self_base->get_iface()->set_gpio_ddr(dboard_iface::UNIT_RX, RX_PUP_5V|RX_PUP_3V|ADF4351_CE|RXBB_PDB|ADF4351_PDBRF|RX_ATTN_MASK);
+
+    //setup ATR for the mixer enables (always enabled to prevent phase slip between bursts)
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_IDLE,        v4_tx_mod, TX_MIXER_DIS | v4_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_RX_ONLY,     v4_tx_mod, TX_MIXER_DIS | v4_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_TX_ONLY,     v4_tx_mod, TX_MIXER_DIS | v4_tx_mod);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_TX, dboard_iface::ATR_REG_FULL_DUPLEX, v4_tx_mod, TX_MIXER_DIS | v4_tx_mod);
+
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_IDLE,        RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_TX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_RX_ONLY,     RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+    self_base->get_iface()->set_atr_reg(dboard_iface::UNIT_RX, dboard_iface::ATR_REG_FULL_DUPLEX, RX_MIXER_ENB, RX_MIXER_DIS | RX_MIXER_ENB);
+
+    //set some default values
+    BOOST_FOREACH(const std::string &name, wbx_v4_gain_ranges.keys()){
+        set_tx_gain(wbx_v4_gain_ranges[name].start(), name);
+    }
+
+    BOOST_FOREACH(const std::string &name, wbx_rx_gain_ranges.keys()){
+        self_base->set_rx_gain(wbx_rx_gain_ranges[name].start(), name);
+    }
+
+    self_base->set_rx_enabled(false);
+    set_tx_enabled(false);
+}
+
+wbx_base::wbx_version4::~wbx_version4(void){
+    /* NOP */
+}
+
+
+/***********************************************************************
+ * Enables
+ **********************************************************************/
+void wbx_base::wbx_version4::set_tx_enabled(bool enb) {
+    self_base->get_iface()->set_gpio_out(dboard_iface::UNIT_TX,
+        (enb)? TX_POWER_UP | ADF4351_CE : TX_POWER_DOWN, TX_POWER_UP | TX_POWER_DOWN | 0);
+}
+
+
+/***********************************************************************
+ * Gain Handling
+ **********************************************************************/
+void wbx_base::wbx_version4::set_tx_gain(double gain, const std::string &name) {
+    assert_has(wbx_v4_gain_ranges.keys(), name, "wbx tx gain name");
+    if(name == "PGA0"){
+        boost::uint16_t io_bits = tx_pga0_gain_to_iobits(gain);
+        self_base->_tx_gains[name] = gain;
+
+        //write the new gain to tx gpio outputs
+        self_base->get_iface()->set_gpio_out(dboard_iface::UNIT_TX, io_bits, TX_ATTN_MASK);
+    }
+    else UHD_THROW_INVALID_CODE_PATH();
+}
+
+
+/***********************************************************************
+ * Tuning
+ **********************************************************************/
+freq_range_t wbx_base::wbx_version4::get_freq_range(void) {
+    return wbx_v4_freq_range;
+}
+
+double wbx_base::wbx_version4::set_lo_freq(dboard_iface::unit_t unit, double target_freq) {
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: target frequency %f Mhz"
+    ) % (target_freq/1e6) << std::endl;
+
+    //map prescaler setting to mininmum integer divider (N) values (pg.18 prescaler)
+    static const uhd::dict<int, int> prescaler_to_min_int_div = map_list_of
+        (0,23) //adf4351_regs_t::PRESCALER_4_5
+        (1,75) //adf4351_regs_t::PRESCALER_8_9
+    ;
+
+    //map rf divider select output dividers to enums
+    static const uhd::dict<int, adf4351_regs_t::rf_divider_select_t> rfdivsel_to_enum = map_list_of
+        (1,  adf4351_regs_t::RF_DIVIDER_SELECT_DIV1)
+        (2,  adf4351_regs_t::RF_DIVIDER_SELECT_DIV2)
+        (4,  adf4351_regs_t::RF_DIVIDER_SELECT_DIV4)
+        (8,  adf4351_regs_t::RF_DIVIDER_SELECT_DIV8)
+        (16, adf4351_regs_t::RF_DIVIDER_SELECT_DIV16)
+        (32, adf4351_regs_t::RF_DIVIDER_SELECT_DIV32)
+        (64, adf4351_regs_t::RF_DIVIDER_SELECT_DIV64)
+    ;
+
+    double actual_freq, pfd_freq;
+    double ref_freq = self_base->get_iface()->get_clock_rate(unit);
+    int R=0, BS=0, N=0, FRAC=0, MOD=0;
+    int RFdiv = 1;
+    adf4351_regs_t::reference_divide_by_2_t T     = adf4351_regs_t::REFERENCE_DIVIDE_BY_2_DISABLED;
+    adf4351_regs_t::reference_doubler_t     D     = adf4351_regs_t::REFERENCE_DOUBLER_DISABLED;    
+
+    //Reference doubler for 50% duty cycle
+    // if ref_freq < 12.5MHz enable regs.reference_divide_by_2
+    if(ref_freq <= 12.5e6) D = adf4351_regs_t::REFERENCE_DOUBLER_ENABLED;
+
+    //increase RF divider until acceptable VCO frequency
+    //start with target_freq*2 because mixer has divide by 2
+    double vco_freq = target_freq*2;
+    while (vco_freq < 2.2e9) {
+        vco_freq *= 2;
+        RFdiv *= 2;
+    }
+
+    //use 8/9 prescaler for vco_freq > 3 GHz (pg.18 prescaler)
+    adf4351_regs_t::prescaler_t prescaler = vco_freq > 3e9 ? adf4351_regs_t::PRESCALER_8_9 : adf4351_regs_t::PRESCALER_4_5;
+
+    /*
+     * The goal here is to loop though possible R dividers,
+     * band select clock dividers, N (int) dividers, and FRAC 
+     * (frac) dividers.
+     *
+     * Calculate the N and F dividers for each set of values.
+     * The loop exits when it meets all of the constraints.
+     * The resulting loop values are loaded into the registers.
+     *
+     * from pg.21
+     *
+     * f_pfd = f_ref*(1+D)/(R*(1+T))
+     * f_vco = (N + (FRAC/MOD))*f_pfd
+     *    N = f_vco/f_pfd - FRAC/MOD = f_vco*((R*(T+1))/(f_ref*(1+D))) - FRAC/MOD
+     * f_rf = f_vco/RFdiv)
+     * f_actual = f_rf/2
+     */
+    for(R = 1; R <= 1023; R+=1){
+        //PFD input frequency = f_ref/R ... ignoring Reference doubler/divide-by-2 (D & T)
+        pfd_freq = ref_freq*(1+D)/(R*(1+T));
+
+        //keep the PFD frequency at or below 25MHz (Loop Filter Bandwidth)
+        if (pfd_freq > 25e6) continue;
+
+        //ignore fractional part of tuning
+        N = int(std::floor(vco_freq/pfd_freq));
+
+        //keep N > minimum int divider requirement
+        if (N < prescaler_to_min_int_div[prescaler]) continue;
+
+        for(BS=1; BS <= 255; BS+=1){
+            //keep the band select frequency at or below 100KHz
+            //constraint on band select clock
+            if (pfd_freq/BS > 100e3) continue;
+            goto done_loop;
+        }
+    } done_loop:
+
+    //Fractional-N calculation
+    MOD = 4095; //max fractional accuracy
+    FRAC = int((vco_freq/pfd_freq - N)*MOD);
+
+    //Reference divide-by-2 for 50% duty cycle
+    // if R even, move one divide by 2 to to regs.reference_divide_by_2
+    if(R % 2 == 0){
+        T = adf4351_regs_t::REFERENCE_DIVIDE_BY_2_ENABLED;
+        R /= 2;
+    }
+
+    //actual frequency calculation
+    actual_freq = double((N + (double(FRAC)/double(MOD)))*ref_freq*(1+int(D))/(R*(1+int(T)))/RFdiv/2);
+
+
+    UHD_LOGV(often)
+        << boost::format("WBX Intermediates: ref=%0.2f, outdiv=%f, fbdiv=%f") % (ref_freq*(1+int(D))/(R*(1+int(T)))) % double(RFdiv*2) % double(N + double(FRAC)/double(MOD)) << std::endl
+
+        << boost::format("WBX tune: R=%d, BS=%d, N=%d, FRAC=%d, MOD=%d, T=%d, D=%d, RFdiv=%d, LD=%d"
+            ) % R % BS % N % FRAC % MOD % T % D % RFdiv % self_base->get_locked(unit)<< std::endl
+        << boost::format("WBX Frequencies (MHz): REQ=%0.2f, ACT=%0.2f, VCO=%0.2f, PFD=%0.2f, BAND=%0.2f"
+            ) % (target_freq/1e6) % (actual_freq/1e6) % (vco_freq/1e6) % (pfd_freq/1e6) % (pfd_freq/BS/1e6) << std::endl;
+
+    //load the register values
+    adf4351_regs_t regs;
+
+    regs.frac_12_bit = FRAC;
+    regs.int_16_bit = N;
+    regs.mod_12_bit = MOD;
+    regs.prescaler = prescaler;
+    regs.r_counter_10_bit = R;
+    regs.reference_divide_by_2 = T;
+    regs.reference_doubler = D;
+    regs.band_select_clock_div = BS;
+    UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
+    regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
+
+    if (unit == dboard_iface::UNIT_RX) {
+        freq_range_t rx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.4e9))
+        ;
+
+        freq_range_t rx_lo_2dbm = list_of
+            (range_t(1.4e9, 2.2e9))
+        ;
+
+        if (actual_freq == rx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4351_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == rx_lo_2dbm.clip(actual_freq)) regs.output_power = adf4351_regs_t::OUTPUT_POWER_2DBM;
+
+    } else if (unit == dboard_iface::UNIT_TX) {
+        freq_range_t tx_lo_5dbm = list_of
+            (range_t(0.05e9, 1.7e9))
+            (range_t(1.9e9, 2.2e9))
+        ;
+
+        freq_range_t tx_lo_m1dbm = list_of
+            (range_t(1.7e9, 1.9e9))
+        ;
+
+        if (actual_freq == tx_lo_5dbm.clip(actual_freq)) regs.output_power = adf4351_regs_t::OUTPUT_POWER_5DBM;
+
+        if (actual_freq == tx_lo_m1dbm.clip(actual_freq)) regs.output_power = adf4351_regs_t::OUTPUT_POWER_M1DBM;
+
+    }
+
+    //write the registers
+    //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
+    int addr;
+
+    for(addr=5; addr>=0; addr--){
+        UHD_LOGV(often) << boost::format(
+            "WBX SPI Reg (0x%02x): 0x%08x"
+        ) % addr % regs.get_reg(addr) << std::endl;
+        self_base->get_iface()->write_spi(
+            unit, spi_config_t::EDGE_RISE,
+            regs.get_reg(addr), 32
+        );
+    }
+
+    //return the actual frequency
+    UHD_LOGV(often) << boost::format(
+        "WBX tune: actual frequency %f Mhz"
+    ) % (actual_freq/1e6) << std::endl;
+    return actual_freq;
+}
+
+
+/***********************************************************************
+ * TX Get and Set
+ **********************************************************************/
+void wbx_base::wbx_version4::tx_get(const wax::obj &key_, wax::obj &val){
+    named_prop_t key = named_prop_t::extract(key_);
+
+    //handle the get request conditioned on the key
+    switch(key.as<subdev_prop_t>()){
+    case SUBDEV_PROP_NAME:
+        val = self_base->get_tx_id().to_pp_string();
+        return;
+
+    case SUBDEV_PROP_OTHERS:
+        val = prop_names_t(); //empty
+        return;
+
+    case SUBDEV_PROP_GAIN:
+        assert_has(self_base->_tx_gains.keys(), key.name, "wbx tx gain name");
+        val = self_base->_tx_gains[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_RANGE:
+        assert_has(wbx_v4_gain_ranges.keys(), key.name, "wbx tx gain name");
+        val = wbx_v4_gain_ranges[key.name];
+        return;
+
+    case SUBDEV_PROP_GAIN_NAMES:
+        val = prop_names_t(wbx_v4_gain_ranges.keys());
+        return;
+
+    case SUBDEV_PROP_FREQ:
+        val = 0.0;
+        return;
+
+    case SUBDEV_PROP_FREQ_RANGE:
+        val = freq_range_t(0.0, 0.0, 0.0);
+        return;
+
+    case SUBDEV_PROP_ANTENNA:
+        val = std::string("");
+        return;
+
+    case SUBDEV_PROP_ANTENNA_NAMES:
+        val = prop_names_t(1, "");
+        return;
+
+    case SUBDEV_PROP_CONNECTION:
+        val = SUBDEV_CONN_COMPLEX_IQ;
+        return;
+
+    case SUBDEV_PROP_ENABLED:
+        val = self_base->_tx_enabled;
+        return;
+
+    case SUBDEV_PROP_USE_LO_OFFSET:
+        val = false;
+        return;
+
+    case SUBDEV_PROP_SENSOR:
+        UHD_ASSERT_THROW(key.name == "lo_locked");
+        val = sensor_value_t("LO", self_base->get_locked(dboard_iface::UNIT_TX), "locked", "unlocked");
+        return;
+
+    case SUBDEV_PROP_SENSOR_NAMES:
+        val = prop_names_t(1, "lo_locked");
+        return;
+
+    case SUBDEV_PROP_BANDWIDTH:
+        val = 2*20.0e6; //20MHz low-pass, we want complex double-sided
+        return;
+
+    default: UHD_THROW_PROP_GET_ERROR();
+    }
+}
+