[Elecraft] P3 shows vertical green stripes on waterfall

Dominic Baines dominic.baines at ntlworld.com
Mon Oct 20 12:38:41 EDT 2014


Sound like TFT screen h/w related.... I got a laptop that does something 
similar with an external monitor IF the screen cable gets kinked or is 
not connected properly. Check all the cables and connectors and vertical 
lines or a somewhat 'green' image cleans up. I'd take a look at the P3 
connections and cables.

72

Dom
M1KTA


On 20/10/14 15:08, jsdroyster at nc.rr.com wrote:
> 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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