Have you been playing around with the SVN test versions?  If so, you need to 
re-calibrate the RX image because there is experimental code in TEST that mucks 
with the RX image if you revert back to a released version.

As a precaution, I'd re-run the RX image calibration just to be safe. 



-Tim

-----Original Message-----
From: flexradio-boun...@flex-radio.biz 
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mark Lunday
Sent: Wednesday, July 08, 2009 10:28 AM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Question about images of strong signals

Noticing something interesting with my F3K and SDR 1.18.1

 

For strong signals (higher than -105 dBM), I am getting images of those signals 
about 20 KHz away.

 

Currently on 6 meters, K4RX calling CQ on 50.101 at -100 dBm.  I can hear/see 
him on 50.121 at -120 dBm.

 

I am also seeing this with some SSB signals on 6 meters.  Pre-amp is on.
When turning Pre-amp off, it helps but the signal is still there.

 

I just realized that this is happening, so I need to look around on the other 
bands.  Anyone else seeing this?

 

 

Mark Lunday

WD4ELG

 <mailto:wd4...@arrl.net> wd4...@arrl.net

 <http://wd4elg.net> http://wd4elg.net

 

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