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Re: [TowerTalk] Force12 rebuild

To: TowerTalk <>
Subject: Re: [TowerTalk] Force12 rebuild
From: N4ZR <>
Date: Sat, 21 Dec 2019 22:14:16 -0500
List-post: <>
In fact, I believe F12 in later years made the 40M single-band antennas (called the Delta line) with coils in place of the linear loading.  That said, I had one up at 104 feet for 15 years with the original alumoweld wire, and zero issues

73, Pete N4ZR
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On 12/21/2019 5:26 PM, Richard Smith wrote:
  Hi Jim,
Sorry to sound dumb, but what is an hb coil?
73, Rich, N6KT
     On Saturday, December 21, 2019, 02:13:15 PM PST, Jim Thomson 
<> wrote:
Date: Fri, 20 Dec 2019 14:01:20 -0600
From: N5KM - Kris <>
To: "" <>
Subject: [TowerTalk] Force12 rebuild

<Im rebuilding my Force12 40m yagi. What would you recommend as replacement
<for the alumoweld linear loading wires? Some of these wires have snapped in
<the past due to years of vibration.

<Note: as part of the rebuild I am adding truss supports for the 3 elements
<in order to remove the stress on the linear loading wires.

<Kris N5KM

##  replace the  LL alumoweld  fubar  with hb  coils...  like  either  al  or  cu.  Use  
dacron  rope  for the
new  truss supports.

##  Dont  even  think  about using SS  wire..... the losses are beyond  sky  high.  It  will  
break  anyway,  cuz  of  metal fatigue.
Stranded  CU wire  would  work,  but hb coils are simpler.

Jim  VE7RF

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