Hi,   Just had an e-mail from the Masat team confirming receipt of my telemetry packets via their  masat client software.

Before I started I installed the latest version of Java as recomeneded ( I already had an earlier version on the PC). Running on an oldish PC  under XP and the standard Windows anti virus and firewall + Malwarbytes anti Malware. Everything worked fine, no error messages or firewall issues.   Hope this helps.   73 John G7HIA