[AMPS] RF Choke Forms

[Phil Clements]

I have seen and used Teflon in many high power HF amps.
It has good D factor numbers, and is easy to groove and tap.
Henry uses Teflon in all their high power industrial RF generators
that run continuously, 8 hrs per day; and most of their ham amps.
Creative Electronics also uses it.

G-10 fiberglass is almost as good, but will usually not survive a
choke fire. (melts)

(((73)))
Phil, K5PC







>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.
>OK, but why as I could not find info on this subject in the ARRL Handbook. Any
help to point me in the >direction of knowledge on this subject would be
appreciated.  May as well learn something while building my >amp. And I want to do
it RIGHT.
>73 de Arne N7KA



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