[ARC5] N-1 Carbon Mic Element and T-17s

David Stinson arc5 at ix.netcom.com
Sun Oct 21 14:40:19 EDT 2012


Re: Using T-17 mics. 
I've found exactly one T-17 that would deliver usable 
audio to a BC-456.  No amount of bashing or baking 
(or cussing) did any good with the others.
So I temporarily hung a telephone element in the case,
which does not fit inside but works, waiting for a better idea.

Came across a few small carbon mic elements
in round cardboard containers labeled:
"ONE N-1 TRANS. UNIT"
IIRC, these are used used in some 50s-60s handsets.
I gave them a "table bump",removed the thick rubber 
moisture barrier and replaced it with light fabric,
then hot-glued the elements in place of a couple 
of stone-dead and unrecoverable T-17 carts, 
with some "stuffing" behind to fill the chamber.  
To my surprise, through the small-diameter holes
 in the T-17 face, these  elements delivered ample audio 
to a BC-456 modulator.  In fact, I can over-modulate.

Are these elements available and at reasonable prices?

TNX ES 73 DE Dave AB5S



More information about the ARC5 mailing list