Tabb,
I now have received my KX3 and it's working ok. Took me just part of an
evening to assemble it. Of course I did try the HDSDR software and
indeed I have the same hum, which is due to ground loops. I also
experienced the total lack of image suppression but that turned out to
be a bad contact in the 3.5 mm jack plug at the female end of the
adapter cable for 3.5 > 2.5 mm. Thoroughly cleaning the plug solved the
problem. Next step will be the isolation. The Softrock mixer has an
isolated BNC connector at it's input, therefore did not show this hum
problem.
73,
Peter - PA0PJE
Don Wilhelm schreef:
Tabb.
You are seeing images. That is a result of either imbalance in your
soundcard gain settings for the I and Q settings or a failure ot the
application to adjust for those images. If you are using NaP3 as your
application, there are steps you can take to detect and cancel the
images - tune to a strong signal and the cancellation process is automatic.
I refer you to the archives on LP-Pan Yahoo group for more information.
Most of the information on NaP3 and PowerSDR-IF can be found there.
73,
Don W3FPR
On 1/11/2013 11:10 PM, W9TTW Tabb Adams wrote:
Hey I got it figured out just needed a isolator between the radio and
computer. I do have one question on the scope I see the same signals
up and down from the center frequency. One in upper side band and one
in lower side band. Do I have a setting wrong in the option menu?
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