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I can give you some insight for how the VHF-UHF module works. It’s a complete module except for the I/Q decode and code. It has its own antenna connections, Connects to the control cable… has

Jerry, Version 66.4 had a bug that caused my T41 to oscillate above 20m. 66.9 solved that. If you take out the MW high pass you need to make sure you have a dc blocking cap in its place. Oliver

*** I built it. - Jerry, KF6VB

Jerry… on the 1.8 MHZ filter… did you build it on the LPF or did you just short across it? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner -

Hi Jerry, I was also having oscillations on high bands, traced mine back to the T/R switch plug in. 20 pins in total but only one of them was a ground, pin 2 of the TR CTL. I had a loose fitting

This shows the diagram for two receivers, but just ignore the second one and the 100W amp. Jack, W8TEE

Forgot the TDA7312…. One of my favorite parts! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

“I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a

Hello all, My T41 has been oscillating on bands higher than 20M. I think others have traced a similar problem to U8, the first analog switch in the receive path on the K9HZ LPF control card. I

Dr. Bill and Oliver, Al and Jack could not have found a more capable pair to take the T41-EP project over the horizion into what we will find in the infinite Experimentation Beyond. I have searched

All:Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the

Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. (Just my take with this next statement) The software side is easier to

Hey Oliver, I have no problem with you moving the test routines to your GITHUB. They surely will get more maintenance attention there than on my GITHUB… Dr. William J. Schmidt - K9HZ J68HZ

All:I agree with everything Oliver has stated here. I should have done a better job of structuring the code from the outset, but at the start, it was just Al and I working on the T41, and we were

I went thru that, changed all the headers and pins to US made and , new Tweeny and Audio Hat, it was golden until yesterdays upgrade. I must have tweaked something pressing the reset button. The pins

Others have had trouble with the pins and connectors… they are not all created the same and can cause intermittent connections if they are not 100% compatible. Dr. William J. Schmidt - K9HZ

Some how when I use the audio hat extension board it causes issues, If I plug audio hat direct into main board no boot issues. I ohmed out the traces on on extension board and all seem fine, so not

Forgot, compile options set as requested on GetHub. Tim

FLASH: code:312604, data:132408, headers:8612 ? free for files:7672840 RAM1: variables:194688, code:288904, padding:6008 ? free for local variables:34688 RAM2: variables:483744 ?free for

What are the summary statistics at the end of the compile? What were the compile options set to? Jack, W8TEE