| You dont have too many choices between ceramic and hard Teflon if high power 
is run. Look around for large surplus chokes such as maybe from a scrapped 
BC or WW2 military TX that are often pi wound. Strip the wire and start 
over.
Ive also seen hollow ceramic forms used for RF coils that may be a good 
candidate. 
Carl
KM1H
----- Original Message ----- 
From: "George" <at6c@bellsouth.net> 
To: <amps@contesting.com>
Sent: Thursday, January 31, 2013 3:46 PM
Subject: [Amps] Rf choke coil form
 I need a recommendation for a material to use in a coil form for an RF 
choke.   The existing choke is about 1.5" diameter by 4" long.  I would 
like to use ceramic but I can't find anything in this size, also what I 
have found is really expensive.  Recommendations?
73,
George
W2GS
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