[TowerTalk] Balun for older Cushcraft 402CD

Richard Thorne rthorne at rthorne.net
Fri Jan 19 07:47:25 EST 2018


Go with a a balun designs  ( balundesigns.com ) 1115d with the studs on 
top.  Go from the balun studs to the element halves with a length of 
wire and ring terminals crimped/soldered.

For mounting the balun to the boom order the BMP1 balun mounting plate.  
Nice and easy and clean, no tape needed other than attaching the coax to 
the boom.

I just replaced a F12 balun (cal-av labs I believe) on my C31.  This was 
the 3rd F12 balun to fail.  They short out for some reason.  JK Antennas 
who now builds F12 antennas also uses Balun Design baluns.

Every one of my antennas now uses a 1115d balun and not a single problem.

Rich - N5ZC

On 1/18/2018 10:29 PM, Dave Thompson wrote:
>   I want to replace the 12 turn coax balun and coax on my older Cushcraft 2 el 40.  Has anyone used the balun from the later XM-240?  I don't see a rating on it and might look for a 4 or 5KW balun (1 to 1).  Anyone used another balun successfully on the beam?  If so I am looking for one with wires to hook to the driven element center and has a coax connector on the side that goes to the shack. I also need to know how it is held on the boom.  I plan on using tape to hold the balun on top of the boom.
> Thanks in advance for the help.
> 73 Dave K4JRB
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