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Al was working on the TX calibration routines and noticed that the calibration worked fine above 350hz but not below. There was too much phase shift between I and Q caused by the corner frequency of

In its current state, I would say No, but others (Greg?) have added the extra memory chip but I don't know their results...perhaps they could enlighten us. Right now, our T41 code uses less than 3% of

Jack I see that there are additional memory options that can added to Teensy. At some point does it make sense to swap out current Teensy for one with added memory chips? I see that it does not add a

Peter: Try recompiling with the options set to "Smallest code with LTO". You should get something similar to: ? FLASH: code:205768, data:127192, headers:9052?? free for files:7784452 ?? RAM1:

Folks, Looking for some ideas for an issues I am having compiling SDT code, to be clear it compiles and loads just fine but when running I get very jittery performance and a sort of "bip bip bip bip

Bill So what are the changes that Al is referring to? John G0SDF

Any advantage now or future to order spare Teensy with ethernet option? Tim

Yep sorry.. .that’s it. It IS on the new schematic. I think what happened is I tried to put it on the schematic (gave it one designator) and then I asked Oliver to do it and we got different part

...Did that. - Jerry

SO send him an email and find out what he did to get it running... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC

Hi Bill Did you mean C85 rather than C74? Regards Phil VK2KKZ -- Regards Phil VK2KKZ

*** Oooh, that's exactly what I needed! A predefined usb_desc.h section with the exact functions - two serials and one audio. I copied that into my code, and am now compiling. Rats. It behaves the

Hello Jerry, You might want to have a look at the "Teensy SDR Project" by K7MDL: https://k7mdl2.wixsite.com/k7mdl/copy-of-teensy-4-sdr That is a complete SDR fitting into a 160x100mm Hammond box

Ok… same as the 2036 with an extra port (for inside the radio). Hmmm I have to look into this stuff to see what I can do with it. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ

To add to this, My IC-7300 has a TUSB2046BIVFRG4

Yes… Its shown on the BOM that is out there currently… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton,

You can do it on your board by just standing the capacitor straight up in the air from the leg between Y1 and L7… and the other side to a close ground pin. I did that and it seemed to work fine. Dr.

I did. those are just BOM and schematic changes, not board changes so was easy to make. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal

Yeah that's what the K3 has too... a TUSB2036 3 to 1 hub, and the three inputs are a PCM2901 CODEC, a FT232 USB to RS232 converter, and a USB connection to the PIC processor (for uploading new

My bad, I loaded the wrong schematic. If I want to add C74, is it a 0.1?F bypass cap like C85? Thanks! Jack, W8TEE