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

[Chris Farley]

 What is the necessary impedance?  One could likely make a pair of little ferrite donut matching transformers and cal them out before use.   
RegardsChris
    On Friday, March 20, 2026 at 01:03:28 PM CDT, Laurence M. Szendrei via Central-Electronics <central-electronics at mailman.qth.net> wrote:  
 
 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

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