Topband: winding ON4UN "braid breaker 1:1 balun

[Tom W8JI]

Planning the antenna, feedline, balun, and grounding as a *system *is more 
important than any single other thing we can ever do. In a complex system 
with standing waves (on the outside of wires and cables) and finite 
impedances, there is no universal "this is optimum" answer.

If your antenna is 50 feet high on 160 and the feedline is suspended for 
60-80 feet to the ground connection point, it already has an invisible 
internal  "self-balun" based on common mode impedances.   :)

If the feedline runs up and is taped to a tower leg, the situation is 
different.

In your case, most likely almost anything you do will be more than adequate.

73 Tom







----- Original Message ----- 
From: "Charles Yahrling" <cfytech24x7 at gmail.com>
To: <topband at contesting.com>
Sent: Tuesday, January 13, 2015 11:27 AM
Subject: Topband: winding ON4UN "braid breaker 1:1 balun


> All,
>
> ON4UN lists optimum turns for binocular braid breaker baluns, but I have
> not found similar info for toroidal baluns.
>
> Using ft-106 type toroid and want to know if "more is better" or should I
> limit bifilar turns to 2-3 as per binoculars?
>
> I run qrp or 100W max, for now at least.
>
> Just putting up a simple dipole at 50 feet to have a go at NAQCC QRP 
> Sprint
> and upcoming CQ 160.
>
>
> 73, 160
> -- 
> de AB1VL
> NAQCC #6799
>
> ab1vl.com
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