ADS-B colinear success

With the new, working dongle, and a new MCX to TNC adaptor, I am now connected up to the colinear. This is hanging from the telly, well inside the house, and is still giving 80% data quality, and tracking a good half dozen aircraft

Thoughts turn now to why the other dongle seems to have failed at 1GHz. I wonder if it doesnt like DC grounded antennas? Before using the ground plane antenna on this one, i'll look at a DC blocking capacitor!

Thats it for radio today, I slept in until midday anyway, and other than this the day has been taken up with giving my fire extinguishers their annual service.