Topband: To Balun or not to Balun that is the question.

[Jaime P.Ullívarri]

Hi Tom,
The BN86 is not a bead balun, at least the old one I've got , I have one
open from my TH7 (burnt) just a voltage balun with 3 windings over a small
ferrite rod, the newer one BN-4000B is a bead (type 77 over RG-303) balun.
Thanks for excellent articles on baluns, I have made several air baluns for
low band.
Best 73 and HNY 2004.
73, Jaime EA6NB.
>-----Original Message-----
>From: topband-bounces at contesting.com
>[mailto:topband-bounces at contesting.com]On Behalf Of Tom Rauch
>Sent: Wednesday, December 31, 2003 09:40
>To: Herb Schoenbohm; i4jmy at iol.it
>Cc: TOPBAND
>Subject: Re: Topband: To Balun or not to Balun that is the question.
>
>
>I'll measure some Hygain Baluns and a few air coils when I get time.
>
>The BN86 is a bead balun like the W2DU style balun but with different bead
>material.
>
>Hygain sent me some baluns when they were going to change to a 73 material,
>but I nixed the change because at ~1000 watts the baluns reached curie
>temperature and quit being baluns.
>
>73, Tom W8JI
>
>> I checked my Hy-Gain 204BA manual and their recomended choke turns is
>> "12 turns of RG-8 cable 6" (15.2 CM in diameter)". This is what I use on
>> the 204BA and correct the amount of turns..
>>
>> Then Hy-Gain in the next sentance go on to say that "for optimum
>> performance use Hy-Gain Balun BN-86 in place of choke."
>
>
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