From 6379e2e52f1d659a051e20af75f2b70676ec3bf4 Mon Sep 17 00:00:00 2001 From: "Matthias P. Braendli" Date: Mon, 28 Dec 2020 14:05:58 +0100 Subject: Update README, notes and Qucs BPF145 --- README.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'README.md') 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 ================= -- cgit v1.2.3