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No SSB TX on new build.

PostPosted: Thu Apr 16, 2015 9:37 pm
by ND6P
Hello,

I just completed building my Peaberry V2 and am testing. All works fine on receive. I can transmit in AM. It sounds good in the receiver and I can null the image well. Problem is that when I change the modulation to LSB or USB, I get no TX output. The meter on HDSDR remains in one position and the lower waterfall freezes.

Does anyone know what the problem might be?

Thanks,

Jim/ND6P

Re: No SSB TX on new build.

PostPosted: Thu Apr 16, 2015 11:55 pm
by W4MMP
Hi Jim,
Do you have HDSDR TX I/Q swapped ? They should be.

Re: No SSB TX on new build.

PostPosted: Fri Apr 17, 2015 12:07 am
by ND6P
Yes, I already had TX I/Q swapped on HDSDR.

Problem turned out to be that the bandwidth in HDSDR needed to be set to 48K before SSB TX would work for me. I had it set at 96K initially.

I also have my microphone USB audio adapter set for 48K, just in case it runs better that way. Anyway, the SSB output sounds good now and I am happy that no rework was needed on the Peaberry. Onward ...

Thanks for the reply, much appreciated.

-Jim/ND6P

Re: No SSB TX on new build.

PostPosted: Fri Apr 17, 2015 12:49 am
by W4MMP
Hum, interesting. I've had both set to 96000 since the beginning.

But, good you have it working. Have fun !