[Elecraft] OT ... Coax DC isolator

[Walter Underwood]

The thing that puts DC on coax is called a "bias tee", so search for that.  --wunder (K6WRU)

On Feb 11, 2014, at 11:00 AM, WILLIS COOKE <wrcooke at yahoo.com> wrote:

> 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 <johnbsaxon at yahoo.com>
> To: "elecraft at mailman.qth.net" <elecraft at 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