[Elecraft] K3 Ant 1 and Ant 2 Isolation?

Don Wilhelm w3fpr at embarqmail.com
Wed Jul 9 10:05:52 EDT 2014


Rich,

It all depends on how you have configured the AUX ANT input for the subRX.
If you have configured the Sub AUX ANT to use the non-transmit ANT1/2 
jacks, then you may have a problem with overload and COR activation on 
the non-transmit antenna.  In that case, the use of some external 
protection device may be prudent.

If you do not have the subRX, it should be no problem or if you have 
that subRX AUX ANT connected to the BNC jack, there should not be a 
problem as long as the BNC jack is left open or grounded.

The selection between ANT1 and ANT2 uses a relay, so except for the 
situation posed in paragraph 1, there should not be a problem.

73,
Don W3FPR

On 7/9/2014 9:32 AM, Rich wrote:
> During FD we were discussing portable antenna options for next year.   
> We were considering a 33' fiberglass pole with a veritical and a G5RV 
> on the same pole.  A 31' piece on wire running vertically down the 
> pole and also a G5RV supported by that same pole.  Then just connect 
> them to the K3 Ant 1 and 2 jacks and away we go, however should we 
> expect to flood the Ant jack which is not in use with RF due to the 
> antennas being so close?
>



More information about the Elecraft mailing list