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Peter, My response was based on your first message, bit your second one, where you profiles the various function in ui_tick().? ?I used the brute force approach to get rid of everything except

Hi Peter, That? is essentially what I did - there is an existing global variable (in_tx) that is True when in Transmit Mode.? In the existing code, once the key down is discovered (which does not

Peter , will it help to use the timing implementation from WiringPi? https://github.com/Pi4J/wiringPi/blob/8d188fa0e00bb8c6ff6eddd07bf92857e9bd533a/wiringPi/wiringPi.c#L2114

Hi, digging deeper I was profiling the sbitx binary, and for better profiling support, I put the different parts of the ui_tick in own subroutines, so they can be identified separately at the profiler

I have no time yet to involve into investigating that problem, but can't the libgpiod functionality of reporting the timestamps of the pin state changes be used for that?

Fascinating.? Sure the waterfall is able to be eliminated and is a good idea.? Is the big yellow display of the dots and dashes worth eliminating, too.? I sure don't need that, although it could be

Hi Jody, very interesting, thank you! If you managed to detect key-down very fast with an IRQ handler, wouldn't it be sufficient to exit/skip time consuming tasks in ui_tick()? I mean setting a new

Ths is how I installed wsjt-z. First, I installed hamlib 4.5.4. Hamlib4 is already installed but I wanted a newer version. export CXXFLAGS='-O2 -march=native -mtune=native' export CFLAGS='-O2

Peter, I have been experimenting with getting CW to work smoothly on this device.? Previously I had published a modification that I made to sbitx_gtk.c which turned off the water waterfall (and more)

Hi Leo, total newbie here, how do I install wsjt-z ? thanks Miguel KP4MI

FYI The Wild West is painful for home brewers. 73, Andy https://youtu.be/XvE4AGfbkew?si=ZGYxSRltqRptn8wa

If you check line #2 in start.sh, it is "cd sbitx" which will error out unless you run the start.sh script from the /home/pi folder because you are already in the sbitx directory and there is no sbitx

here is my CLI output pi@sbitx:~/sbitx $ ./start.sh ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??USER ?? ?? ?? ??PID ACCESS COMMAND /dev/snd/controlC0: ??root ?? ?? ?? ??321

Thanks for the user experiences. Sounds like FT8 is usable then. It’s just a mode I very rarely use. SSB even less. As for CW…. “The zBitx is a CW dream machine….” is what the ad says.

Of course, the output power measurement is just probably by measuring voltage and assuming a resistance, but that’s a pretty low overall calculated efficiency, 15% or so. And of course part of that

At 9v and 100% I was showing 5 watts out with a current draw of around 3.8 amps on FT-8. Cheers Jim

Do you happen to know how much power it is drawing then?

It wouldn't be a 1:1 swap. The GPIO pins are in a different configuration on the Radxa. It might be possible to change all the pin assignments in the software to get it to work.

Next improvement could be this: https://radxa.com/products/zeros/zero2pro/

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