[TowerTalk] new-to-me Force12 EF-180B rotary dipole

[Billy Cox]

Hi Geo,
 
Any words of wisdom on this please?  (I just purchased
one here and need to do a rebuild before putting it up ...)
 
How high is yours? In-line or 90 degree offset?
 
TU for all and any advice!
 
73 Billy, AA4NU
 
 
 
To: 	towertalk <towertalk at contesting.com mailto:towertalk%40contesting.com>
Subject: 	[TowerTalk] new-to-me Force12 EF-180B rotary dipole
From: 	George Dubovsky <n4ua.va at gmail.com mailto:n4ua.va%40gmail.com>
Date: 	Fri, 11 Jan 2019 10:00:28 -0500
List-post: 	<mailto:towertalk at contesting.com>
I just acquired a used F12 80 meter dipole with the linear-loading wires. I have read everything I can find online about this design (mostly in Tower Talk) and I have a few questions. Has anyone modeled this antenna with the linear loading? I am curious as to how much L the linear loading wires present. I have read reports of folks using coils instead of the LL wires. Has anyone published real details of the modification, including any necessary element reinforcing or trussing? Is there a source of the Alumoweld wire if I should put it back up using the original design? The existing wires appear to be in usable shape, but all of the clamps are rusted and I don't know what I will find when I remove them. Any and all advice concerning this antenna is cheerfully solicited... ;-). 73, geo - n4ua