Another solution is to first wrap the core with Plymouth silicone-
rubber tape, a stretchy, self-sticking, RF-compatible material that
withstands high temps.
On Jun 15, 2006, at 8:52 AM, Mike McCarthy, W1NR wrote:
> Not a spray, but I use GC Electronics Q-Dope. Of course, I wrap
> the core
> with glass tape first. I guess you could use Q-dope directly.
>
> Mike, W1NR
>
> ----- Original Message -----
> From: "Larry Carman" <lncarman@swbell.net>
> To: <amps@contesting.com>
> Sent: Thursday, June 15, 2006 11:33 AM
> Subject: [Amps] FW: glass tape scotch 27
>
>
> Is there a HV spray ( like flyback coating ) that can be applied to
> toroids
> that would be acceptable.
>
> Larry N5BIP
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-
> bounces@contesting.com] On
> Behalf Of Peter Chadwick
> Sent: Wednesday, June 14, 2006 9:37 AM
> To: craxd1@verizon.net; amps@contesting.com
> Subject: Re: [Amps] glass tape scotch 27
>
> Will asked:
>> Again, what's the use in using a tape that I would think could be
>> replaced
> with something much cheaper for us poor folks<
> If you're building a one off (as so many hams do), you probably
> don't worry
> too much about scraping around for a roll of tape if finding something
> cheaper will take too long and may not do the job. It may even be
> the case
> that there's some 'surplus' at work! In business, it's another
> matter, and
> at a company where we used dust iron toroids in tank circuits at
> 100 watts
> with 6146Bs, we wrapped the cores in PTFE (sorry - Teflon)
> plumber's tape,
> which is about 0.004 inch thick, but cheap. I suspect Teflon tape
> would do
> instead of the Scotch fibreglass stuff, assuming you can get it.
> 73
> Peter G3RZP
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R L MEASURES, AG6K. 805-386-3734
r@somis.org
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