[TowerTalk] U-bolt swivel

Kelly Johnson n6kj.kelly at gmail.com
Mon Jun 11 14:44:51 EDT 2007


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, jacobsen_5 at msn.com <jacobsen_5 at msn.com> 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
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