[TowerTalk] KLM Balun??

[John Unger]

Hi Mike -

I took the KLM 4:1 balun on my KT-34A apart after the screw for the lead
attachment broke off inside the plastic pipe body. The balun is a very
simple design using two tubular ferrite rods and two pieces of #14 or #12
teflon insulated wire configured like I've seen either in the Handbook or
Antenna Book (can't remember where I saw the design...). I simply
repackaged the "guts" in a plastic box from Radio Shack, and it's been
working FB ever since. I've never measured the efficiency, but SWR was very
low when I checked it out with a dummy load after the rebuild. It seems to
be bullet proof at high power, too.

73 - John, W4AU


>Michael Tope wrote:
>
>> While I have our KLM 40 meter 4el yagi on the ground, I am wondering if I
>should
>> replace the stock KLM 4:1 balun? Does anyone know how these are
constructed,
>> how efficient are they, and how reliable are they? I have had some bad
>luck with
>> Hy Gain BN-86s and am wondering if the KLM baluns are any better?
>>
>> Thanks,
>>
>> Mike W4EF....................


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