[hpsdr] Possible added feature request

[Scott Traurig]

There was work in this regard done a long time ago but it is hopelessly
stale and it also requires additional hardware:

https://openhpsdr.org/wiki/index.php?title=VNA

It would undoubtedly be easier to adapt a NanoVNA. Not only is the hardware
ready to go, the software is simpler and a lot more accessible. It would be
easy to embed in a home brew tuner:

https://openhpsdr.org/wiki/index.php?title=VNA

Finally, it's worth noting that the only tuner on the market that
actually makes a complex impedance measurement and jumps right to the exact
answer in one step is the MFJ-939. If MFJ made a legal limit version of
that tuner I'd buy it in a heartbeat.

73,

Scott/w-u-2-o


On Tue, Nov 3, 2020 at 11:32 AM <radio at netins.net> wrote:

>
> Pure signal uses one RX channel to provide feedback.
>
> Is it possible to use an RX channel to determine just the phase and
> resistance of the RF signal in the antenna system feed point?  If so,
> this could be used to automate a home brew antenna coupler.
>
> John,  W0GN
>
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