Hi John,
My immediate first thought on checking your screenshot was either dislodged or defective 1090 SDR (the receiver dongle inside the end cover of Rosetta with the cable from the 1090 antenna connected to it (the other dongle is the GPS). As you have already checked that it isn’t dislodged (thanks Paul), I would normally just suggest dropping an e-mail to Ash at
support@pilotaware.com who should be able to arrange a replacement SDR.
I am however concerned by your comment that ‘I only get a red warning against mode c’...
Can you please elaborate... are you saying you
definitely get ‘Mode-C’ warnings (but not Mode-S or ADSB) and if so in what form and on what (SkyDemon, EVFR, PAW RADAR ??) and at what reported relative altitude? - or do you mean you are seeing Mode-C reports on the PAW Traffic Screen? Please confirm
how you are determining that the warnings you are seeing
are Mode-C.
If (as seems likely) your 1090 receive dongle
isn’t working, you shouldn’t be seeing
any traffic reports at all - except from other PilotAwares (the P3i side is handled by the Bridge board, which is completely separate from the 1090 side).
Ideally, power up the unit outside in the clear and post some screenshots of the Configure and Traffic Screens after it has been running for a reasonable time - and if you can, post shots of any of the mystery ‘Mode-C’ reports. This should help us diagnose what is actually going on and we should be able to get your unit back operational.
Best Regards
Peter