[Test-Equipment] Make your own coil dope

[WA5CAB at cs.com]

In addition, (a) at least part of the time, the former you are glueing the 
wire to is also polystyrene so no question of how well it will bond, and (b) 
it's much less trouble than mixing epoxy.  Open container, apply, close 
container for the next time.

In a message dated 5/29/2009 2:11:31 PM Central Daylight Time, 
mikea at mikea.ath.cx writes: 
> On Fri, May 29, 2009 at 11:19:52AM -0700, davec wrote:
> >Why not just use epoxy or such?
> >
> >Just curious what is special about the "coil dope".
> 
> "Traditionnnnnnnnnnnnnnnnn!
> 
>          Traditionnnnnnnnnnnnnnnnnnn!" 
> 
> Also, polystyrene coil dope has very low RF absorption, way up into the
> near-daylight region of the spectrum. With store-bought epoxy, you don't
> necessarily know how it will behave at, say, 6m or 23 cm or wherever you
> choose to generate or receive your signal. With coil dope, you do,
> because as soon as all the solvent evaporates, you've got polystyrene,
> which is very much a known (and well-behaved) quantity.

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480