Ian..
Catalogs from U.S. sources such as Dayton Plastics, Regal Plastics and
Cadillac Plastics (and probably scores more by now) listed "glass-filled
Teflon." I've never tried it.
In a similar vein, the very common transformer insulation Nomex* (DuPont,
nylon-based I believe) also is available mica-filled, which has better
characteristics for some applications - (high temperature?) - but don't
remember whether the difference is physical stability or dielectric
strength/corona resistance or both.
73, Dick
-----Original Message-----
From: Ian White, G3SEK [SMTP:G3SEK@ifwtech.demon.co.uk]
Sent: Sunday, February 14, 1999 5:18 PM
To: amps@contesting.com
Subject: Re: [AMPS] coil form plastics
Carl wrote:
>
>
>
>On Sun, 14 Feb 1999 11:28:09 +0000 "Ian White, G3SEK"
><G3SEK@ifwtech.demon.co.uk> writes:
>
>SNIP >> snip>>>
>>
>Soft Teflon makes a poor choke form but hard Teflon works quite well. I
>believe it has a fiberglass mixture. Machines well and costs less than
>pure Teflon.
Any brand names and sources?
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.demon.co.uk/g3sek
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|