[CQ-Contest] My Monobander is howling !

Robert Chudek - K0RC k0rc at citlink.net
Mon Mar 9 21:55:59 PDT 2009


The rope inside the antenna elements was used to dampen the vibration / 
oscillation of the individual element. If left unchecked, the aluminum would 
"work harden" from the constant flexing and eventually break. I don't know 
if this is the howling you are hearing, but you could try this trick to see 
if it helps your situation.

73 de Bob - KØRC in MN

----- Original Message ----- 
From: "Sigurdur Jakobsson" <siggijak at gmail.com>
To: <cq-contest at contesting.com>
Sent: Monday, March 09, 2009 2:35 PM
Subject: [CQ-Contest] My Monobander is howling !

My 4 el. 20 meter monobander is howling when the wind blows. What is
everyone doing to eliminate vibration/howling in their beams ?

Maybe the old HyGain trick of putting rope inside the elements ?

And yes, the ends of the elements and boom are plugged.

73´s Siggi TF3CW
CQ-Contest mailing list
CQ-Contest at contesting.com

More information about the CQ-Contest mailing list