Hi Billy,
Thanks for that. The only thing I can see from your Config screenshot is that - as you say you have a transponder fitted - you should have 'Mode C/S Select' in 'Bearingless Contact Settings' set to 'Mode C/S + Filter' so the unit can filter out the 'Mode C' (altitude) transmissions from your own transponder, though I doubt this is significant to the issue you are reporting. Interestingly, you don't appear to have any of the USB Ports set to supply data for your ADSB-Out
- or does the transponder use a different GPS position source? Interestingly, I have just checked the PAW Database, which is showing P3i and MLAT reports from 4015A4 on 4th and 7th March, but no ADSB since your flight up the west coast of Scotland on 28th February.
So if I have this correct: -
You are still getting poor 1090 reception with your 'G-ASAL 'in plane' PAW whether you are using the fitted external 1090 antenna, or the Internal One, but the other PAW (out of G-CEIS) gets good reception with it's own (stick on Internal) antenna, or the fitted external one in the Bulldog. Is that correct?
If so, the problem
has to be internal to the 'Bulldog' PAW.
The 'Orange' 1090 indicator, by the way is a 'red-herring' (sorry). All that indicates is that the unit
has received some 1090 data since it was powered up, just none in the last 15 seconds or something like that. It only shows green if 1090 data is
currently being received, and the unit is showing no Power issues and a good GPS fix (at least for the short time covered by the test).
The first check would be to open the end cover of the Rosetta unit and check that the SDR dongle is properly seated in its USB slot - (normally lower right).
Also check that the connection between the pigtail cable and the SDR is good - if you remove it by easing it out of the connector, on the end of the SDR it should go back in with a clear click. If there is still no improvement, you could try temporarily swapping in the SDR from the other unit to see if the situation improves. If it does, you need a new SDR (they are available from the PilotAware Store at
https://www.pilotaware.com/product/software-defined-radio )
Let me know how you get on.
Best Regards
Peter
p.s. I have sent you a message via the Forum Message Board.