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Re: [TowerTalk] 2:1 Transmission Line Transformer

Subject: Re: [TowerTalk] 2:1 Transmission Line Transformer
From: Barry N1EU <>
Date: Mon, 27 Jun 2011 21:41:55 +0000
List-post: <">>
I chiseled the LB matching xfmr apart and Steve G3TXQ and Joe W4TV
were correct.  It is a trifilar wound 2.25:1 unun.  Evidently LB felt
a balun was unnecessary (?).

Barry N1EU

On Mon, Jun 27, 2011 at 8:02 PM, Barry N1EU <> wrote:
> On Mon, Jun 27, 2011 at 3:31 PM, Barry N1EU <> wrote:
>> Steve, it was a balun for matching their quads and delta loops to
>> 50-ohm coax and was magically compact (~3in diam X 2in high).
>> Perhaps I need to find one and dissect it.
> I found a LB balun I received about 10 years ago that had the SO-239
> pull out of it over time.  As soon as I can, I will attempt to route
> out the potting compound with my Dremel and photograph what lies
> inside.  The dimensions are actually 2.2" X 1.6", so it really is
> tiny.
> Barry N1EU

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