[hpsdr] SSB TX is sometimes on the wrong sideband

[Andreas Troschka]

If nothing helps, or later it works again without apparent motivation and then the problem appeares again, I would look at the earthening circuit and try to be sure electrostatic discharges are properly conducted to the earth.
This because such a behaviour of your equipment sounds as like as being originated from e-static discharges puzzling digital circuitry/memory, or so.
It can happen because of vertical antennas also (and other types of non short circuited antennas). Mostly on windy days, they capture big amounts of e-static charges through the rod wich are brought by the way of the hot conductor of the coax directly to the ant. connector on the radio.

My 50cents

vy 73s de IK2WQI, Andreas Troschka



> At 10:06 AM 6/24/2007, john_eckert at agilent.com wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> A couple days ago I was unable to check in to a 40M net even
>> though signals were strong and I was running a KW.
>>
>> The next day, the same thing happened.  After checking the
>> antenna and the normal culprits, nothing was found.
>>
>> I powered up my spectrum analyzer and found the srd1000/O/J
>> was transmitting on USB while I was listening on LSB. Hmmm.
>>
>> I switched bands to 160M and RX and TX were both on LSB as
>> indicated by PowerSDR.  I then switched back to 40M and it was
>> working correctly, RX/TX on the same sideband.
>>
>> I'm guessing that something is going on in PowerSDR.  I'll try
>> to figure it out and let you know.
>>
>> 73,
>> John
>> k2ox

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