[TowerTalk] HyGain 155CA dampening rope

[Wayne Kline]

John,


   You 100% correct ,,, the dampening  is required because of  taper design,


 As I said   in one of my past posts,,,,, The Hi Gain  155 design with out dampening rope , wit ha slight breeze  will  vibrate like a tuning fork ..


YMMV


Wayne W3EA


________________________________
From: TowerTalk <towertalk-bounces at contesting.com> on behalf of john at kk9a.com <john at kk9a.com>
Sent: Thursday, June 22, 2017 3:04 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] HyGain 155CA dampening rope

I think rope is just a patch for a poorly designed element.

John KK9A

To:     Towertalk Reflector <towertalk at contesting.com>
Subject:        Re: [TowerTalk] HyGain 155CA dampening rope
From:   GALE STEWARD via TowerTalk <towertalk at contesting.com>
Reply-to:       GALE STEWARD <k3nd at yahoo.com>
Date:   Thu, 22 Jun 2017 18:28:33 +0000 (UTC)


Some years ago, Dick Weber, K5IU did some work on this issue and I believe
that
he wrote an article that was published in CQ (or maybe QST).
I haven't found it online but I didn't do a lot of digging.
Dave Leeson, W6NL, talked about element vibration damping techniques in his
book "Physical Design of Yagi Antennas", page 4-39.

73, Stew K3ND

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