Hello all, I am trying to figure out why our P3 panadapter sometimes but not 
always shows a group of vertical green stripes that cover about 1/6 of the 
width of the screen.  These stripes are not related to RF frequency because if 
I switch bands they remain in the same location.  If I remain on one band and 
twirl the VFO knob, real radio signals move into the green stripes but the 
stripes themselves are immobile.  

Sometimes these are not there at all. Sometimes they are near the left of the 
screen, more often toward the middle.

Wayne gave some instructions for investigating this on PX3,but this is P3.
Any ideas?

Am I correct that these cannot be related to real RF interference due to the 
above facts? Wouldn't real RF be frequency-related? We do sometimes get RF 
interference that shows as periodic narrow lines on the waterfall, but these 
wide stripes are different.

THANKS!
Julie KT4JR

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