Hi all. Thanks so much for the great positive feedback.
I used the 50ohm cable simply because it was there. What better reason right? Oh and it fit the cheap and nasty connectors i bought on Ali Express. Went with SMA as they fit the receiver.
Future plans will probably look at a better 75ohm cable of sorts and will also be reducing the cable length. Have ordered an enclosure to mount the Pi and Receiver on the base of the mast. This will drop the cable length to about 5 meters. Will claw back about 3 or 4 db perhaps.
Considering the overall result and getting the above done. I think i will hold off with the LNA and monitor the results. As for the range achieved so far it is mostly due to the terrain. Well the lack of it mostly! Quite flat out here and don’t need to go much above roof line to get a good 360 line of sight. Makes ADSB fairly easy. Im motivated to get the extra little bit of reach as i’m competing against a work mate. He has the first receiver in town and using distance he WAS in front at 239nm. Overnight I think I have him at 242nm.
Im so having fun with radio again!