The SD card on my Raspberry Pi just died, so I downloaded the image and started again. All is working fine. With my previous installation I was able to change the host name from adsbexchange to ADSB-Pi using sudo rasps-config. However when I try this with the new setup I get. Unable to resolve host ADSB-Pi: Name or server not known Obviously no problem as I can leave it as adsbexchange but just wondering why? Network both wired and wireless are working ok.
Thanks for your quick reply. That was the first thing I did. After a bit of further digging I found a mismatch between the hostname file and the hosts file. There were several entries on the first line of the hosts file - I removed them all and added localhost. The last line of the hosts file still had raspberrypi so I removed this and added ADSB-Pi and rebooted. All is now well and the error has gone.