[TowerTalk] Fwd: An alternate yagi feed method
Hans Hammarquist via TowerTalk
towertalk at contesting.com
Wed Dec 17 08:46:50 EST 2014
Wasn't the gamma match intentionally designed to have the shield of the coax directly connected to "ground' (boom that is)? Worked for me.
Hans - N2JFS
From: Jim Thomson <jim.thom at telus.net>
To: towertalk <towertalk at contesting.com>
Sent: Tue, Dec 16, 2014 12:02 pm
Subject: [TowerTalk] An alternate yagi feed method
Date: Mon, 15 Dec 2014 14:35:58 +0000
From: Steve Hunt <steve at karinya.net>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] An alternate yagi feed method
What's to stop CM still flowing along the braid? Or along the boom? Or both?
On 15/12/2014 03:11, Jim Thomson wrote:
> Then no requirement for a balun, and no pesky CM current flow anywhere.
## hey, that’s Mosley talking, not me ! Some Mosley manuals state to use a
coiled up coax choke balun,
and most of their manuals say not to bother with any balun. On a similar note,
I built several hb yagis
back in the 70s + 80s.... plumbers delight, with all eles bonded to the boom,
DE. They were all gamma matched. No balun used. Pattern was not screwed up
Superb FB + FS. No rf problems anywhere. Should these gamma /omega matched
have a CM choke installed ..or not ? I never used a choke on any of my .25
ants either. Just ran the coax up the inside of the tower.
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