[Top] [All Lists]

Re: [TowerTalk] Balun question

To: "Tower Talk List" <>
Subject: Re: [TowerTalk] Balun question
From: "Jim Brown" <>
Date: Thu, 14 Jun 2007 11:14:12 -0700
List-post: <>
On Thu, 14 Jun 2007 10:56:40 -0700, David Gilbert wrote:

>Per your comment below, I'm curious why I don't hear people using small 
>diameter high-flexibility heliax for ferrite core baluns.  FSJ1-50 (1/4 
>inch diameter) and FSJ2-50 (3/8 inch diameter) are both rated for a 
>one-time bend radius of 1 inch, and either should handle a lot of 
>power.  Short lengths (5 to 50 feet)  of both types regularly show up on 
>eBay at well under a buck a foot. 

Probably for the same reason that it isn't in genreal use in ham radio -- 
few hams (including me) know about it or know that it is available at low 
cost. I see no reason why it wouldn't be a good choke material. On the 
other hand, ordinary coax works fine too. 


Jim Brown K9YC


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>