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Hi Tom: For some reason, the site has rejected the last 4 applications for membership and I cannot see why. Also, the posts were sent to my Spam folder...again, don't know why. I think I have

Here are the ferrite sleeves I use. Tim W4YN

Bill. Would like 4 encoder boards. Let me know cost and will pay through pay pal. Tom AB9EK

It is hardware issue. I am testing 3rd party BPF BCD input code is same as yours. Tracing for short now. Tim

I have asked for some help and to purchase some boards through this site. I have not seen my posts or have a reply to them. Am I being black balled? If that's the case would someone please let me

I am interested in getting a 3.3 V board to see if it will further improve the receive noise on 6M by reducing radiation from the cable between the Main and Display boards. I have an AI6YM chassis

Bill, Would like to order 4-encoder boards and 2- Teensy Offset boards and 20A Power Distribution kit. How do you take payments and shipping cost to zip code 53132. Tom AB9EK E-mail; call @arrl.net

I've sent a message several times asking about the digital post processor that was in the book "microcontroller s for amateur radio" and have gotten no response so no need for me to belong to the

Hello, I discovered this project last Fall and this reflector even more recently. I have been reading the discussions about "Display Noise' and"SPI issues"? with much interest and since my experience

I'm running 66.4 that I believe you sent me. RX_SEL_BPF does not change state when PTT is pressed, You can observe that on J1 of the LPF-Cntl pin 8. You can see Pin 7 & 8 easily at that connector. I

Thanks Dave! Do you mean that RX_BPF_SEL does not change state? Can you point me to the source of the 66.4 code you're running? I want to try to figure out why this is the case.

That is strange. This sounds like the kind of error that can happen when the data structures stored on the EEPROM change, for instance when you move between versions of the code without erasing the

Bill, I don't have any oscillations, but then I don't have a LPF or PA built yet. I lost over a week trying to get back to where I could compile a running version. I attached the spectrum of the 10m &

I think it would.? I was going to test this but didn't want to make up another cable.? I was sweating it with the one I made thinking I'd get the wiring wrong or connect it upside down.

I've made dozens of changes to the 66.9 .ino, sdt.h and config.h files which entailed multiple compiling and loading cycles. I want to say that this is the most stable and easy-to-live with release

I've been happy with my 4SQRP T41, but I don't have much experience with this.? What's considered an "intolerable" noise level for that radio? Currently, my partially built v12 has a receiver noise

“ Bill, are you saying the T41 kits are unusable? The displays work great! ” I said no such thing. The display worked but the noise from the SPI buffer chip brought the noise level in the receiver

Greg et al: The TMPS previously had noise induced in the audio chain by the display interface when everything was managed by a single Teensy (touching the screen & changing onscreen objects caused a

Any digital bus, by its nature, is going to produce noise.? That's the physics of digital waveforms (high slopes and discontinuities).? This issue is mitigated by applying good EMI design practices

This information is incorrect. The 74HC125 was the source of horrendous noise generation in the HF band spectra when connected to the SPI bus. This is documented in the forum exchanges from fall two