It's usually best to put separate inquiries on separate threads so that they're all easier to follow, so I hope you don't mind that I'm responding here, instead of Darwin's thread about TFT screen upgrades.
To answer your question, if you look in the tuner.cpp file, line 41, you'll see a function called "setTXFilters". Inside that function, you should see thresholds, and the filter selections they activate. Note that as the function name implies, these filters are used for transmitting, but they are NOT used for receiving. If you look at the uBiTX v6 schematic (downloadable here: ) you'll see these TX filters on the right hand side, with signals of FLA, FLB, and FLC controlling them.
For receiving, there's only one RF filter and two IF filters, and they're all always in place - there's no software control, other than adjusting the IF frequencies. You can see this in the schematic, and also in top of the block diagram found at . So if you're getting SW interference, an external filter (like you've tried) or doing some radio surgery to add an additional internal filter are the only solutions I'm aware of.
Reed
Reed what changes would need to be done to constantly select the band pass filters during rx in your latest and greatest v,1.5?
Last evening I was getting bci from some strong stateside SW station but when I put my external LP filter in line, it went away.
