[TowerTalk] Trap Coil Coating

K9MA k9ma at sdellington.us
Sun Sep 22 17:41:24 EDT 2019


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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