[Central-Electronics] Aligning broadband couplers in 100V or 200V with NanoVNA?

[Laurence M. Szendrei]

Greetings,

Has anyone here tried using a nanoVNA to check the alignment of the 
broadband couplers in a 100V or 200V? The problem to solve is impedance 
matching, since the nanoVNA ports are 50 ohms. Appropriately-sized 
series resistors on the input and output? Those will attenuate the 
signal, which might be acceptable since we are looking for a qualitative 
response. Of course this would be done with no power applied to the 
transmitter.

73,
-Larry/NE1S