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David - something to keep in mind when removing the channel switch - the input lines to the PLL may float to a state that represents an invalid channel. That may cause the PLL to shut down the

Nice!!! t leaast i know im not the only one converting these rigs. Yes 10 meters is hot. I was running Cw with about 1 1/2 watts and making contacts. I want to build a fm board so i can run the

BTW, the 37 in FT37-43 means its size is 0.37 inch, and 43 is the material mix of the toroid. So yes, they are very small. If you have fat fingers, the FT50-43 is a bit bigger. Use about one turn less

The FT37-61 toroid has a much lower permittivity than FT37-43, translating into a far lower inductance. I'd guess 5 to 10 times less inductance. It might work, but why go through the trouble? FT37-43

Two 0.1 uf capacitors on the encoder board are WAY much simpler! Barry Sent from Mail for Windows Sent: Monday, February 26, 2024 1:44 PM To: [email protected] Subject: Re: [BITX20] sbitx

I understand now. Jack, W8TEE

Hi Evan: What is the interpretation of the call to enc_read(&enc_b)? Most encoder ISR's return either 0 or 1. If that's the case, the ISR could be simplified to: void tuning_isr(void) {?? int

Steve for the win!

Wow, that is awesome.??I did not understand most of what he said lol but the radio sounds great

John: I just sent this to my senators. Dear Senator ____: I'm writing about the pending legislation: The Amateur Radio Emergency Preparedness Act of 2024. I trust that you are familiar with the

Farhan, In reviewing the tuning encoder, I found the function tuning_isr(void): static int tuning_ticks = 0; void tuning_isr(void){ int tuning = enc_read(&enc_b); if (tuning < 0) tuning_ticks++; if

I had a senior moment looking at those pictures and thought you were up around 14800, but that isn't an 8, it's a 0. So look at the waterfall where 14020 is located. See the dots and dashes flowing up

Gordan, Amen on that. its always fun to do something which wasnt meant to be and make something better than what it was. 73 David ac9xh

Steve, I also must apologize. for the hijacking . the solder smoke video is incredible. I love the way he used copper foil on board with each board slightly isolated . incredible

Aaron, You always have to assume the outputs of any transceiver is unclean. I have friends with 1000 dollar radios that think their outputs are super clean and when you put them ona spectrum analyzer

A fascinating project, guys! Gordon KX4Z

I checked my Pi 4 install and in the /boot/config.txt file it says "The file you are looking for has moved to /boot/firmware/config.txt" So I'll modify my script to put the config.txt in

Jack, In the sbitx, the encoders fire interrupts and measure the time through millis(), it is a wrapper around utime() - f [email protected]> wrote:

The hdmi audio devices interferes with the audioinjectorpi device driver which is why the following line is in the config.txt file: # Enable DRM VC4 V3D driver dtoverlay=vc4-kms-v3d,noaudio I filed a

A block diagram of the conversion concept is attached. Apologies to Bill for hijacking his thread. At least the conversion process requires the generation of some SolderSmoke. 73; Steve, N3SB