Topband: Fw: Re: Coax Choke Balun

[Russ Tobolic]

Bill;
 
K4SAV mentioned that obtaining ferrite cores is sometimes a problem. Are you running high power thus the need for RG213?  I only run 100w and am using a clamp-on ferrite (mix 31) per K9YC's paper.  I use a Fair Rite P/N 0431173551 which allows me to loop 6 turns of RG8X through the internal 0.75" opening.  These are available from Newark as their P/N 96B5352 The cost is $5.28 each and there is no min order with Newark.
 
Russ, N3CO

--- On Wed, 11/11/09, K4SAV <RadioIR at charter.net> wrote:


Bill Gillenwater wrote:
> I need some suggestions, or the "go-ahead". I am getting ready to wrap 30 turns of RG213 around a 14" piece of 8" round PVC, for use as a choke on my inverted L.  Is there a better way? 
The choke balun will work (depending on how much impedance you really 
need).   There are some advantages to using a ferrite core, but 
obtaining the core(s) is sometimes a problem.