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[TowerTalk] Force12 rebuild

Subject: [TowerTalk] Force12 rebuild
From: "Jim Thomson" <>
Date: Sun, 22 Dec 2019 09:41:40 -0800
List-post: <>
Date: Sat, 21 Dec 2019 22:26:59 +0000 (UTC)
From: Richard Smith <>
Subject: Re: [TowerTalk] Force12 rebuild

< Hi Jim,
<Sorry to sound dumb, but what is an hb coil?
<73, Rich, N6KT

##  HB...AKA ....home brew ! 

##  I  used  4.5 inch OD   PVC  for  the form.  Once coil  is wound,  turns  
tight, its slid  off  the  pvc  form. 
Turns are then  spaced  out  to  spec..starting  with a screw driver  at one  
end...spiraling round and  round .   
Repeat  for the remaining coils. 

##  I  used  .375 od  tubing  for  the  hb  coils on  my  F12-340N.   Ends  
flattened,  then  punched for the  .25-20 hardware.  
In  my  case,  aprx  5.5  turns. 

Jim   VE7RF


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