Hello LF 'ers
Monday, April 25, 2016
Best regards,
Chris 2E0ILY mailto:[email protected]
> 25 April 2016
> Had a report that my LF WSPR2 signal was dirty with massive side bands
> on Sunday. I had a look at my setup today found Windows had decided to
> up the audio level from WSPR to maximum into the TS-590 and scoping
> the output of the pre amp and frequency doubler before my G3YXM amp
> showed it looking very ropey indeed.
> I reset it and did a couple of normal WSPR2 transmissions interspersed
> with using the WSPR TUNE function, whilst watching on the G3XXM and
> G4WGT LF grabbers. I am no expert whatsoever, but it doesn't look bad
> now to me. Is this an adequate test to make and to assume things are
> now OK? Thanks.
> Screenshots are at http://www.chriswilson.tv/signals/signals.html
I managed to get a few more minutes on this, and now my SA is fixed
and calibrated I thought some SA screen shots would be useful. I stuck
a small rubber duck antenna in the input port and looked at my signal
in real time off my normal TX antenna whilst actually transmitting
WSPR2. Tried with 2 frequency spans. Also took photos of the
scopematch showing a good V /I balance, and the amp meter set to show
reflected power, which all but nothing. Am I clean....? :)
http://www.chriswilson.tv/signals2/signals2.html
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