[MRCA] Military Mike T-17 Jack Insulation Washers

[D Platt]

Those washers were used to keep the mic circuit above "chassis" or 
"frame" ground for noise reduction purposes, until the three mic leads 
reached the final destination in the installation.  In most aircraft 
installations, at least originally from the factory, you're apt to find 
a pair of these shouldered washers on the mic jack.  On the subject 
installations, the tell-tale is that the mounting hole for the mic jack 
will be just a bit larger than the jack would appear to require to 
accommodate the washer shoulders and the anti-twist, pin-hole will be 
missing.  Got to be honest, though, they always seem to get lost and it 
never appears to make any difference?   Its probably a good idea, 
though.  I used to have some in the junk box but it looks like they're 
long gone, now.  I remember that the BC-614 and not a few aircraft jack 
boxes also used them.  I'll keep looking, Breck!!  de Jeep/K3HVG

WA5CAB at cs.com wrote:

B. Smith wrote:

>Anyone have any of those  little fiber  washers that are used on a T-17 
>military mike jack (3/8) inch to insulate it from the chassis?
>73 breck k4che 
>
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