A more thorough treatment at http://www.k1ttt.net/technote/airbalun.html
On 6/4/05, Steve N4LQ <n4lq@iglou.com> wrote:
> Google is an amazing tool. Just put "coaxial choke" in the search field and
> voila:
> http://www.hamuniverse.com/balun.html
>
A more thorough treatment at http://www.k1ttt.net/technote/airbalun.html
- A 1:1 coaxial balun with excellent choking reactance for 10 through
20 meters can be made by winding 6 turns of RG-213 on inexpensive 4
inch PVC sewer pipe.
- For 40 or 30 meters, use 12 turns of RG-213 on 4 inch PVC sewer
pipe.
Use about 25ft RG-213 in the coil for 80M or 50ft for 160M, as has
been discussed at length on the Topband reflector.
73,
Barry N1EU
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