Amps
[Top] [All Lists]

[AMPS] coil form plastics

To: <amps@contesting.com>
Subject: [AMPS] coil form plastics
From: w4eto@rmii.com (Richard W. Ehrhorn)
Date: Tue, 16 Feb 1999 11:11:36 -0700
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


<Prev in Thread] Current Thread [Next in Thread>