Topband: Fw: Re: Coax Choke Balun

Paul Christensen w9ac at arrl.net
Thu Nov 12 10:35:45 PST 2009


> Would a length of RG-8X sufficient for looping through the ferrite
> cores easily handle full legal power on 1.8Mhz?

Barry, to handle high power with a small coaxial cable, I typically use 
RG-303, and sometimes RG-400 (a variant of RG-142).  These cables can be 
found on-line in various short lengths for winding cores.  I believe RG-303 
is used in the high-power "Balun Designs" brand on the models where he does 
not use a tight conductor pair.  I've been meaning to contact them as 
another supplier to purchase RG-303 in 10-foot lengths.

Paul, W9AC 



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