Scott Dorsey wrote:


All those electret elements have a FET-IC in them, which is a J-FET with
controlled leakage so that they don't need a grid leak resistor inside them.
Apply voltage across them through a resistor, pick the modulated signal
off through a capacitor. With a little tinkering with series and shunt
resistances you can make one fit right in place of a carbon element.
--scott

Very interesting, gentlemen. I'm going to have to give this a try as
I've, heretofore been using the element tken from H-33/PT handsets and
those old single-headest PBX operator's units. Might either of you have
the part numbers? I fear, also, that RatShak may well have deleted this
item as they have hundreds of other components.

de Jeep/K3HVG