aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--README.md16
-rw-r--r--sw/picardy/README.md2
-rw-r--r--sw/pio.txt3
3 files changed, 17 insertions, 4 deletions
diff --git a/README.md b/README.md
index da972f8..e204c6c 100644
--- a/README.md
+++ b/README.md
@@ -11,15 +11,25 @@ The firmware is MIT-licenced.
* Designed in KiCad
* Meant to be used with a microwave transverter
- * But also stand-alone 28MHz and 144MHz (The IF bands)
+ * But also stand-alone 144MHz
* Offer plug-in band-filters for other HF bands
* Using a STM32F103C8T6 controller
- * Si5351 clock source (generates 3 clocks)
+ * Programmed in [Rust](https://rust-lang.org/)
+ * Si5351 clock source (generates clocks)
* An LCD display
* Discarded ideas
* Include a Lars Widenius GPSDO originally published on [eevblog](https://www.eevblog.com/forum/projects/lars-diy-gpsdo-with-arduino-and-1ns-resolution-tic/?all)
* Offer a 10MHz output refclk for a transverter
* Instead, have a 25MHz ref input, and use a LeoBodnar reference
+ * Use the Si5351 to generate the VHF LO at 116 MHz
+ * It wasn't clean enough, so a separate [XTAL LO board](./lo_board/) was designed
+ * With a 114.286 MHz crystal, we get a first IF of 29714 kHz
+
+*First QSO done with this transceiver and MMRF1021 amplifier on 2020-12-07*
+
+On RX, an [LNA4ALL](http://lna4all.blogspot.com/) LNA was used. On TX, 2x SPF5189Z, a bandpass filter to remove the LO,
+and the [MMRF1021](http://git.mpb.li/git/mmrf1021-pa/about/) amplifier were used, giving about 200mW output power on the
+very first trial.
Open questions
==============
@@ -34,8 +44,8 @@ Open questions
Issues
======
-* VHF LO seems terribly noisy, try with external XTAL LO board
* Coupling between VHF filter coils was way too large
+ * Fixed, replacement of coupling caps.
* SEQ0 is used in inverted-logic in baseband, and noninverted for power relay
* Due to inconsistent naming
* Ugly fix on K603 side, use SEQ0n, SEQ1, SEQ2
diff --git a/sw/picardy/README.md b/sw/picardy/README.md
index 3436bb7..60e2596 100644
--- a/sw/picardy/README.md
+++ b/sw/picardy/README.md
@@ -8,7 +8,7 @@ Programming
Put target in reset
- openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg
+ make openocd
cargo run
diff --git a/sw/pio.txt b/sw/pio.txt
index 917ed7a..1ca2f18 100644
--- a/sw/pio.txt
+++ b/sw/pio.txt
@@ -8,6 +8,9 @@ Analog multi-level button inputs
* BTN0 PB1 ADC12_IN9
* BTN1 PB0 ADC12_IN8
+Analog RX AGC measurement (S-Meter)
+ * PA5
+
Digital buttons
* BTN2 PB12
* BTN3 PB13