From 6379e2e52f1d659a051e20af75f2b70676ec3bf4 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Mon, 28 Dec 2020 14:05:58 +0100
Subject: Update README, notes and Qucs BPF145

---
 README.md         |  4 ++--
 kicad/control.sch |  2 ++
 qucs/BPF145.sch   | 24 +++++++++++++++++-------
 3 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 51fc94d..7ab6f86 100644
--- a/README.md
+++ b/README.md
@@ -55,11 +55,10 @@ Issues
 * 5V jumper is less useful as hoped
   * Intention: disable VHF stuff
   * Unintended effect: removes LCD backlight
-* Are 10uH for L311 and L305 ok too?
 * C319 and C326 are redundant
 * BC856W wrong footprint
 * R327 upsets DC offset of audio amp, capacitive decoupling needed
-* 2m filters from LimeRFE use values I don't stash
+* 2m LPF from LimeRFE use values I don't stash
   * 20pF done with 2x 10pF
 * SW: ADC input for buttons looks messed up...
 * Connect 3V3 LDO to 12V directly
@@ -76,6 +75,7 @@ Issues
   * Next to R515
   * I still have spurious next to transmit frequency, spaced 200kHz because of the DCDC converter
   * Measure 8V current!
+* Added 100nF caps on microphone connector to suppress RF being coupled
 
 PCB Assembly Plan
 =================
diff --git a/kicad/control.sch b/kicad/control.sch
index e6f453a..5b08978 100644
--- a/kicad/control.sch
+++ b/kicad/control.sch
@@ -1476,4 +1476,6 @@ Wire Wire Line
 	8900 4850 8900 5050
 Wire Wire Line
 	8900 5050 9200 5050
+Text Notes 1900 6150 0    47   ~ 0
+Added 100nF caps\non all pins to GND
 $EndSCHEMATC
diff --git a/qucs/BPF145.sch b/qucs/BPF145.sch
index ea88bec..5110f7c 100644
--- a/qucs/BPF145.sch
+++ b/qucs/BPF145.sch
@@ -1,4 +1,4 @@
-<Qucs Schematic 0.0.19>
+<Qucs Schematic 0.0.20>
 <Properties>
   <View=0,-60,1657,800,0.909091,0,0>
   <Grid=10,10,1>
@@ -18,18 +18,21 @@
 <Components>
   <Pac P1 1 90 230 18 -26 0 1 "1" 1 "50 Ohm" 1 "0 dBm" 0 "14070 kHz" 0 "26.85" 0>
   <Eqn Eqn1 1 420 600 -23 14 0 0 "S11_dB=dB(S[1,1])" 1 "S12_dB=dB(S[1,2])" 1 "yes" 0>
-  <.SP SP1 1 120 560 -50 73 0 0 "lin" 1 "100 MHz" 1 "250 MHz" 1 "300" 1 "no" 0 "1" 0 "2" 0 "no" 0 "no" 0>
-  <C C1 1 270 180 -26 -67 0 2 "3.6 pF" 1 "" 0 "neutral" 0>
+  <.SP SP1 1 120 560 -50 73 0 0 "lin" 1 "100 MHz" 1 "210 MHz" 1 "300" 1 "no" 0 "1" 0 "2" 0 "no" 0 "no" 0>
   <L L1 1 400 180 -26 10 0 0 "330 nH" 1 "" 0>
   <L L4 1 490 280 10 -26 0 1 "39 nH" 1 "" 0>
   <L L5 1 490 380 10 -26 0 1 "12 nH" 1 "" 0>
   <L L6 1 630 280 10 -26 0 1 "27 nH" 1 "" 0>
   <C C6 1 490 470 -103 -26 0 3 "43 pF" 1 "" 0 "neutral" 0>
   <C C7 1 630 470 -103 -26 0 3 "22 pF" 1 "" 0 "neutral" 0>
-  <C C5 1 720 180 -26 -67 0 2 "3.6 pF" 1 "" 0 "neutral" 0>
   <L L2 1 850 180 -26 10 0 0 "330 nH" 1 "" 0>
-  <GND * 1 560 500 0 0 0 0>
+  <GND * 5 560 500 0 0 0 0>
   <Pac P2 1 1170 250 18 -26 0 1 "2" 1 "50 Ohm" 1 "0 dBm" 0 "14070 kHz" 0 "26.85" 0>
+  <C C1 1 270 180 -26 -67 0 2 "3.3 pF" 1 "" 0 "neutral" 0>
+  <C C5 1 720 180 -26 -67 0 2 "3.3 pF" 1 "" 0 "neutral" 0>
+  <L L7 1 980 260 10 -26 0 1 "400 nH" 1 "" 0>
+  <C C8 1 980 440 -103 -26 0 3 "4.73 pF" 1 "" 0 "neutral" 0>
+  <R R1 1 980 350 15 -26 0 1 "1 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
 </Components>
 <Wires>
   <90 180 90 200 "" 0 0 0 "">
@@ -49,11 +52,18 @@
   <490 310 490 350 "" 0 0 0 "">
   <490 410 490 440 "" 0 0 0 "">
   <1170 180 1170 220 "" 0 0 0 "">
-  <880 180 1170 180 "" 0 0 0 "">
-  <630 500 1170 500 "" 0 0 0 "">
+  <880 180 980 180 "" 0 0 0 "">
+  <630 500 980 500 "" 0 0 0 "">
   <1170 280 1170 500 "" 0 0 0 "">
+  <980 180 1170 180 "" 0 0 0 "">
+  <980 180 980 230 "" 0 0 0 "">
+  <980 500 1170 500 "" 0 0 0 "">
+  <980 290 980 320 "" 0 0 0 "">
+  <980 470 980 500 "" 0 0 0 "">
+  <980 380 980 410 "" 0 0 0 "">
 </Wires>
 <Diagrams>
 </Diagrams>
 <Paintings>
+  <Text 930 120 12 #000000 0 "114.286 notch filter">
 </Paintings>
-- 
cgit v1.2.3