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Thanks to all for their answers to my questions. Much appreciated, and may be useful to many others too.

Now for another question for which I have searched and found no answer.

Is it safe to connect my NanoVNA H4 through my MFJ-971 tuner, and to my antenna?

Is it safe, or is there even a valid reason for doing this?

TIA, Doug.

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73

Doug Kearney, VA3DKA

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*Ottawa, ON *


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Yes, you can absolutely connect a VNA to an antenna via a tuner, it is an excellent way to tune an antenna/tuner system without transmitting (other than the sub-milliwatt VNA signal) and subjecting your transmitter to weird mismatches in the process, and also to understand what effects the various controls have; this is especially interesting when viewing an S11 Smith Chart plot.
Even hooking up a tuner and dummy load and watching the response on the Smith Chart can be enlightening.
73, Don N2VGU

I connect a nanoVNA-H4 to my antenna through a tuner. Why not? It lets me watch the effect of the tuner on resonance frequency and SWR as I adjust the settings.