[AMPS] RF Choke Forms

[measures]

>
>
>-----Original Message-----
>From: Arne Gjerning <gjerning@flash.net>
>To: Amp Ref <amps@contesting.com>
>Date: 15 January 2000 06:15
>Subject: [AMPS] RF Choke Forms
>
>
>>I have been advised NOT to use Teflon, Delryn, and a few other
>>insulating materials for an RF choke. Instead only use
>ceramic. It was
>>then stated the "D" factor was the reason.
>>
>I'm not familiar with delrin, but I can't believe there
>could be any electrical problem with PTFE/Teflon.
>
Delrin has too much D-factor.  Teflon has a good D-factor but lacks 
stiffness.  Fiberglass-filled Teflon might be ok.  G-10 and G-11 
epoxy-fiberglas tubing make excellent - but uncheap - coil forms for 
HV-RFCs.   Plastifab,1425 Palomares, La Verne, CA  91750  818 967 9376.

cheers, Steve


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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