It is not very hard to do this John.  Just feed the RF in and out with a couple 
of RF capacitors and feed the DC in and out through 1 or 2 MH chokes  I think 
MFJ has them for sale and I know they have them in tje MFJ 927 AMP.
 
Willis 'Cookie' Cooke, TDXS DX Chairman
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart


________________________________
 From: John Saxon <johnbsa...@yahoo.com>
To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> 
Sent: Tuesday, February 11, 2014 12:34 PM
Subject: [Elecraft] OT ... Coax DC isolator
 

Off topic here:

I am experimenting with two different antennas and would like to switch between 
them with a relay.  I am considering getting an isolator that permits placing 
the DC control voltage on the rf coax.  Any thoughts on this?  I have never 
done this before and would appreciate any advice/suggestions.

OH...I am using my K3/10...so maybe not ENTIRELY off topic :-)

--
John 
K5ENQ
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