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With the addition of the following: 1. Change the following capacitors to 20pF - C33, C37, C46, and C54 2. Replace capacitors C35, C48 to 0 Ohm resistors (eg jumpers). Just mount them on top of the

Hey yall' I've tried everything I can think of.? The pulsating noise corresponds to the sclk signal (pin 13 led which also pulsates) which seems to be modulated by the spectrum update rate that is

I have the C boot drive which is a SSD, but only 500G, my D drive, which holds everything and is 1 TB and the drive that died, and drive F which is a 2T hot-swap backup drive. D no longer shows up in

In terms of reworking an existing board it looks like I need to: 1. Remove U19, U20, U22 and U23 along with associated capacitors (capacitor removal looks optional as they are no longer connected).?

It seems to be a combination of things (not just one)… weak SPI line drivers on the Teensy T4.1 and cross-talk (capacitive coupling) between the data lines that gets worse as the cables get longer.

*** That sucks. Did it die completely, or just lose data? Sometimes they can be read by putting the drive in the fridge. I have a unique system. I don't keep anything important on my desktop PC.

What would be the cause of the display issues when some of us have ribbon connectors to the display that are 4-5" long? Jack, W8TEE

*** Like the Ubitx. Good idea. - Jerry, KF6VB

If a new main board was designed... I think I would do what John did... sort of... I would put the main board right on the back of the display. That way there is no display cable. The thing is already

If we were to redesign the Teensy - or just do a Main Board with a directly soldered iMXRT1062 - I'd want to free up the JTAG port for *hardware debug*!!!! It would speed up software development by an

Hi Tim- Yes, you can add a lot of external memory.? There are pros and cons.? This memory, being physically external to the Teensy (System On Chip), is going to be slower than the memory on the same

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