Loss of PowerSDR calibration in 8 minutes - images return

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Calibrate with S9 signal - watch images disappear
2. Wait 8 minutes
3. Images are back

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
V1.19.3.5 on 32 bit Vista home

Please provide any additional information below.
Running N4PY, PowerSDR IF, EMU-0202 sound card with ASIO drivers. This has 
happened intermittently for the past couple of days and for some reason today 
it's solid.  I can calibrate, and watch the panadapter display as the images 
reappear over an 8 minute period.  During that time, the EMU isn't touched and 
nothing else is changed.

Original issue reported on code.google.com by floydse...@gmail.com on 1 May 2011 at 5:56

[GoogleCodeExporter]

Automatic WBIR (wide band image rejection) has alot of bugs in the base 
PowerSDR v 1.19.3 that we are based off of. I see this too, and it should be 
fixed in the next roll-up of our code to a newer base version. Since this isn't 
specifically a program in the PowerSDR/IF code extension, but rather in the 
base PowerSDR code. 

I will leave this bug report open and close it when we rollup to a new base 
version which should fix this issue. 

Original comment by mccleme...@gmail.com on 15 May 2011 at 4:07

[GoogleCodeExporter]

One other piece of info on this:  N8LP pointed out that the problem 
could be caused by minor differences in the I and Q signal levels coming 
out of the sound card.  I've had my EMU-0202 for several years, most of 
the time with the level pots in the same position.  So, I worked them 
back and forth many times each and since then there have been very few 
occurrences of the random loss of calibration.  It has happened a couple 
of times, but not as frequently.  Maybe just a coincidence, maybe not.

73, Floyd

Original comment by floydse...@gmail.com on 15 May 2011 at 4:40