Could'nt resist.
snip
" Are you sure TUFNOL is'nt a old Belgian brand of CHOCOLAT ? "
Snip
Sorry guys, its hard to be serious when born in the early thirties.
Jos on4kj
----- Original Message -----
From: "Neil Carr" <carr.n@runshaw.ac.uk>
To: <amps@contesting.com>
Sent: Sunday, September 14, 2003 8:07 AM
Subject: [Amps] Tufnol rod
> I have acquired various lengths and diameters from ¼" to 1" Tufnol rod. I
> plan on using it to wind my anode choke and at HV stand-off points.
>
>
>
> Although I see a number of articles (here in Europe) suggesting PTFE or
> Tufnol maybe used in the applications mentioned, I rarely see anyone using
> Tufnol.
>
>
>
> In order to "get wise" on the pros & cons of both materials I did a web
> search and found VERY little information on Tufnol rod in general. I asked
a
> friend in the USA who builds amps and he said he had never heard of the
> stuff.
>
>
>
> My question is:
>
>
>
> (1) Is Tufnol a European "thing"?
>
> (2) Is one "better" than the other?
>
>
>
> I also heard one way to test coil former material is to check its heating
> properties by placing it in a microwave oven with a cup of water (Not in
the
> water, this just acts as a dummy load (Food) to protect the oven). If it
> stays cold then it has very little or no loss effects at RF, the web page
> was for trap making ides.
>
>
>
> Not too sure how one would use this to simulate conditions in an amp
> ???????, but I put my 800w oven on for 2 mins, the cup was boiling. The ¼
> and ½ rods were still cold but the 1" rod could not be handled for a good
> couple of mins, although there was no burning etc. I don't have any PTFE
rod
> for comparison right now.
>
>
>
> Comments/advice appreciated.
>
>
>
>
>
> Neil G0JHC
>
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