[Top] [All Lists]

Re: [TowerTalk] U-bolt swivel

To: "Kelly Johnson" <>
Subject: Re: [TowerTalk] U-bolt swivel
From: <>
Date: Mon, 11 Jun 2007 13:49:46 -0500
List-post: <>
Kelly..... I found pictures of the mount in the 20th ed of the ARRL Antenna 
book. It appears that the way it was built was STRONG!!!  Might be worth 
finding a copy of the book and look at the pictures. I don't have a scanner so 
can't copy it for you.

K9WN  Jake
  ----- Original Message ----- 
  From: Kelly Johnson<> 
  Cc: towertalk<> 
  Sent: Monday, June 11, 2007 1:44 PM
  Subject: Re: [TowerTalk] U-bolt swivel

  I can picture this in my mind, but isn't that a lot of stress to put
  on the u-bolt and mast since you now have the entire weight of the
  antenna pulling down on the "boom section" with no counter-weight on
  the other side?

  On 6/11/07,<> 
<<>> wrote:
  > Kelly, n6kj, is looking for a way to swivel his 2el/40m to vertical so he 
can work on it without having to drop........errrr, lower it from the tower.
  > Kelly, If my ageing memory serves me correctly, the PVRC came up with a 
mount to do just this. I think it was even included in the ARRL handbook at one 
time. Nothing more than a short "Boom section" attached to the mast, coming out 
horizontally about 10" or so. Then you would mount the boom from the antenna 
onto the stub by rotating the mounting plate horizontal (same plane as the 
elements).  Does this "rattle" anyone else's grey matter? Maybe point Kelly to 
a picture/drawing??
  > GD luck with your project.
  > 73
  > K9WN  Jake
  > _______________________________________________
  > _______________________________________________
  > TowerTalk mailing list

TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>