"Ron, KC4YOY" wrote in message
...
I'm looking for a replacement mic element for an old style unamplified
D-104.
Does anyone know of a source?

73, Ron

Ron,

Yes. Mouser has Kobitone crystal and ceramic Hi-Z microphone elements that
have been successfully used by other D-104 owners for replacement.

These can be found in their on-line catalog (Adobe Acrobat) on page 1136
(lower right of that page). Specification of the elements (diameters,
impedance, etc.) are shown:
http://www.mouser.com/catalog/620/1136.pdf

gb