Thanks. From what I've read, Hy Gain often supplied a BN-86 balun with
their yagis. This balun is not rated for high power and is well known
for failing when high power is applied. Many of the people who
experienced that failure switched to the BN-4000 model which is rated
for higher power, and had no problems after that. I have a BN-4000,
not a BN-86.
73, Gerry KA2MGE
Just reiterating Rick's comment about Hygain baluns... I think there
may have been a couple of different models, but I've acquired nine
used Hygain monobanders over the years and the baluns that came with
all of them were not worth reinstalling. So, I second Rick's advice to
get decent balun for your antenna. Also, some folks have said that
getting the driven element adjusted properly on a TH-6 is a bit of a
PITA. If you have any way to do that and mark it ahead of time it
might save you some frustration up on the tower later. 73 & good luck
on your project. Matt KM5VI -----Original Message----- From: TowerTalk
On Behalf Of Richard Karlquist Sent: Thursday, November 7, 2024 2:53
PM To: Gerry Maira Cc: 'towertalk@contesting.com' Subject: Re:
[TowerTalk] TH6-DXX Band segment settings I see you dug up one of my
old posts. The only thing I would add to that post is that is that
anecdotal reports of using a tuner to extend the bandwidth of such
Yagi's may say "it seemed to work fine" only indicate that no
effective tests were done to measure it. Consider this: the TH6DXX has
6 or maybe 7 dB gain over a dipole at best. Using a tuner, the gain
will never be less than a dipole. So it will work as well as a dipole.
For casual operation, that may work just fine. It's only down 1 S
unit. Regarding baluns: The TH6 was designed when hams were limited to
1kW DC input equivalent to 600W RF out on a good day. Using 1,500 W
out may blow the balun up, especially if you have high VSWR. Recommend
you make a homebrew balun as per K9YC's cookbook.
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