Well I have a varied Career in Broadcasting from floor Technician to RF Engineer in Transmitters, AM, FM and TV 5 Watt relays to 50 KW base stations.
Then I went on to Telus a Telcom was involved it cellular Antennas and RF Systems.professionally the VNA was indispensable. Now in Amateur radio it is an affordable tool giving incredible results.
I may have to invest in a Tiny SA next. Chip technology has made so many thing almost common place.
Enjoy your retirement I know I am. 73 Dave VE6LX
VE6LX