[TowerTalk] elevated short vertical dipole orquarterwave monopole?

[Michael Tope]

Yes, I suspect you are right, Tom. It will be interesting to see if
changing the feed to one with better balance will make our 10 meter
antenna any quieter. Too bad its stacked above two other big yagis
(big PITA to get it down and back up).

73 de Mike, W4EF............



----- Original Message -----
From: "Tom Rauch" <w8ji at contesting.com>
To: "Michael Tope" <W4EF at dellroy.com>; "Jim Lux" <jimlux at earthlink.net>;
"Guy Olinger, K2AV" <olinger at bellsouth.net>; "TowerTalk"
<towertalk at contesting.com>
Sent: Friday, December 03, 2004 10:31 AM
Subject: Re: [TowerTalk] elevated short vertical dipole orquarterwave
monopole?


> > Hey, while we are on the subject, how about gamma matched
> > yagis. I have a friend who swears by using a gamma match
> > on his yagis with no feedline choke.
>
> When I had a gamma matched Wilson 20M yagi, the common mode
> voltage on the coax was so high the coax actually arced
> between the tower leg and the coax shield. I was only using
> a 4-1000A amplifier, so it isn't like I had a lot of power
> either.
>
> That's my only experience with a gamma matched Yagi.
>
> I'd bet the whole antenna is pretty much unbalanced.
>
> 73 Tom
>
>
>
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