Yes, it's 1:1. On one of my TH7s, I use a Palomar balun, which works
BTW, if anyone needs a BN-86, I have one available that I'll part
with for a reasonable price.
On 18 Feb 2004 at 12:40, Dick Green WC1M wrote:
> When I had a TH-7, I replaced the BN-86 with the BN-4000. The latter
> worked fine for high-power contesting for years. The replacement was
> induced by a mechanical failure of the BN-86 that was unrelated to
> transmission power (the balun exploded when the coax on my tubular
> crankup snagged -- a long story.)
> I recently tried to replace a BN-86 or BN-4000 (can't remember which)
> on a friend's TH-7 with a Cal-AV FB-1 choke balun. It didn't work --
> the SWR was too high and inconsistent across the band. Neither of us
> understood why this didn't work. As far as I know, the BN-86 and
> BN-4000 are 1:1 baluns, right?
> 73, Dick WC1M
> > -----Original Message-----
> > From: Carl [mailto:email@example.com]
> > Sent: Wednesday, February 18, 2004 10:09 AM
> > To: Lee Buller; Bernard
> > Cc: TowerTalk Reflector
> > Subject: Re: [TowerTalk] BN-86
> > I think the BN4000 current balun is a good replacement for
> > the BN86 if it's still made.
> > 73,
> > Carl K8AV
> > > I haved done this on a TH6DXX just four years ago. Lets
> > just say the
> > > BN86 will fail when using full output of an amplifier for
> > long periods of time. I have seen one burned up in my life.
> > What I did was to put a RadioWorks 4 KW balun on my TH6DXX
> > and works just fine. I used a couple of hose clamps to
> > attach it to the boom. IT has bee up four years and haven't
> > any problems. The only problem I have is the end caps get
> > brittle and water gets into the traps. Have to replace them
> > every 4-5 years.
> > > Bernard <firstname.lastname@example.org> wrote:
> > > I am going to replace the BN-86 on my TH7 this Spring. I am
> > wondering
> > > if anyone has bought a BN-86 since MFJ took over the
> > Hy-Gain operation? If so, what do you think of the quality of
> > the balun?
> > >
> > > Anyone have any ideas for a "quality" balun to replace the BN-86.
> > >
> > > 73
> > >
> > > Bernard, WA4OEJ
> See: http://www.mscomputer.com for "Self Supporting Towers",
> "Wireless Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
Barry Kutner, W2UP Internet: email@example.com
Newtown, PA Frankford Radio Club
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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