[TowerTalk] Trap Coil Coating

[Glenn Pritchard]

Hi Scott 
There’s a type of glyptol that I used a few years ago but not as brittle. It can be found in electrical supply shops, what the name is I’m not sure.

Glenn,VA7UO 

Sent from my iPhone

> On Sep 22, 2019, at 2:41 PM, K9MA <k9ma at sdellington.us> wrote:
> 
> My old A3 traps, from the original Cushcraft, not MFJ, have coils coated with some sort of thick material. It also serves as a staking compound for the sheet metal screws on each end of the coil, none of which have loosened in 27 years. (I looked at all of them.) The MFJ traps I ordered as spares are completely uncoated. If I ever have to put them up, I'd like to at least stake the screws. (Coating the coil, even with a low loss material, would probably shift the resonance.) Does anyone know of a material that could be used for this purpose? If nothing else, I suppose I could stake the screws with epoxy, as losses there shouldn't be critical.
> 
> 73,
> 
> Scott K9MA
> 
> -- 
> Scott  K9MA
> 
> k9ma at sdellington.us
> 
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