Another update:
So, set the PAW up in the van again, my son monitoring and on the radio, it's reading 40 aircraft or so, a few local helicopters going offshore so all is good.
Nothing from my aircraft, on the ground, took off flew about 6 or 7 miles away nothing at any point picked up.
Spoke to Norwich, C and S being received, took a selfie of myself on FR24 with ADSB as the source.
So, landed, son goes flying and nothing from him, notb on the ground or flying overhead, all the rest being reported as before.
Thanks for the suggestion about the trial, I'm up in Norfolk so a bit of hike, been to GW lots of times over the years and agree, great airfield.
Now, to make sure the PAW was not set to my plane's details I set it to my sons plane, so now it has been set to my plane and my sons plane and now it doesn't see either of them......what ever the configuration says, are we seeing something in common here?
I'm thinking I download the new program to the SD card again so it's raw and empty and then see if it's picking up my plane?
Is the program written in such a way it's ignoring all previously 'configured' aircrafts details?
Just a thought, thanks again for the suggestions, Regards, Clive