[Elecraft] K3 RX Ant - first try - nothing

[Bob Wilson, N6TV]

On Tue, Sep 5, 2017 at 10:07 PM, Jim Miller <JimMiller at stl-online.net>
wrote:

> I have not tried to use Rx ant previously.
>
> K3 (sn 1442) Manual Rev D pf 43 - I have KXV3 and KAT3.
>
> Antenna connected to BNC on KXV3 and Rx ant selected on main receiver.
>
> No receive.
>

Connect the RX antenna to the BNC labeled "RX ANT IN", not the BNC labeled
"AUX".  Tap RX ANT to listen to the RX ANT on MAIN.

If you have the Sub RX (KRX3), you can connect the RX antenna to the BNC
labeled AUX.  Enable the SubRx (tap SUB), then HOLD the RX ANT button to
toggle the SUB RX ANT between MAIN and AUX.

There is no way to listen to the AUX BNC connector on the MAIN receiver,
only the Sub RX.

I assumes you have CONFIG:KRX3 set to ANT=BNC.  If you have CONFIG:KRX3 set
to ANT=ATU *and* you have wired the radio that way (there are two antenna
wiring options for the SubRx), then the SubRx can listen on ANT1 or ANT2,
whichever is not being used by the MAIN, instead of AUX.

It seems there was a decision to make when I assembled it that had to do
> with antenna configuration and I cannot find it in the manual.


This is best explained in the KRX3 Installation on Operation manual
<http://www.elecraft.com/manual/KRX3%20Subreceiver%20Installation%20and%20Operation%20Rev%20F1.pdf>,
page 26.

If you have two transmit antennas, say an all band vertical and a
multi-band dipole, the ANT=ATU wiring option allows you to transmit on
whichever one is hearing best on any particular signal, or you can use
diversity reception and listen on both, one in each ear.

73,
Bob, N6TV