[Elecraft] K3 & Txmon Connection

Nate Bargmann n0nb at n0nb.us
Sun Feb 21 20:33:25 EST 2016


* On 2016 21 Feb 18:32 -0600, Joel Black wrote:
> Deane,
> 
> I have discovered the same. It kind of acts like an SWR meter put
> *after* a tuner.
> 
> If I use a resonant antenna or transmit into my dummy load, I don’t
> get these squirrelly readings.

Presuming that both of you have the internal tuner in your K3s and no
external tuner, then, yes, what you're seeing is expected and normal.
Remember that the internal tuner provides a match to the receiver and
transmitter but cannot change the complex impedance that is present on
the feed line.

I do have an external tuner and the TXMON sampling unit is connected
between it and the amplifier.  I also have an internal tuner on the K3
and sometimes use it instead of the external tuner.  When I do, the P3
SWR meter is predictably reading much higher than the radio's SWR meter.

73, Nate N0NB

-- 

"The optimist proclaims that we live in the best of all
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