[Elecraft] Muting one K3 while other is transmitting

[Jim Brown]

On 3/8/2014 12:50 AM, Christian Janssen wrote:
> Hi,
>
> I have two K3s running equally on one band in SSB. If transceiver A 
> transmits, transceiver B should be muted to protect the RX of 
> transceiver B.

That depends on the spacing and directivity of the antennas to which the 
two transceivers are connected.  I have run 2 K3s on the same band into 
antennas separated by 125 - 200 ft with a KPA500 driving one antenna and 
a Ten Tec Titan driving the other. I have done this on 20, 15, and 10M, 
both at home, and on county expeditions for the California QSO Party. At 
our CA QSO Party site, we have done it on 40M and 80M using antennas 
separated by about 300 ft, and we are using KPA500s. We have one K3 on 
CW and the other on SSB.

This setup does not work for all antenna setups and orientations -- at 
CQP the antennas are carefully located so that their nulls are in the 
direction of the other antenna on the same band.  We can do this because 
Yagis aimed at 70 degrees azimuth provide a very good pattern to work 
the US, EU, AF, and northern SA.

73, Jim K9YC