[Icom] ICM Mic element Problem

[Jim Isbell]

I too had the element go out in my ICOM 725 mike.  I replaced it with an 
electret element from RS.  It required a mod of the resistor in the mike 
to allow more voltage on the mike element but it worked fine after 
bypassing the resistor to get full voltage.  The elements I used were $3 
for TWO in a package so I still have a spare.  And as he said, the on 
the air reports were impressive!!.

>>Hi to the group.
>>For some unknown reason my Heil ICM mic element went bad.  Had to yell
>>into the mic to get any audio out.  I successfully replaced it with a
>>Radio Shack Condenser Microphone Element p/n 270-090 at a cost of
>>$2.49.  It looks very similar to the ICM element.  On the air reports
>>were impressive.   I had successfully replaced a raspy sounding element
>>in my SM-10 about a year ago with the same part number from RS.  I
>>presently use an Icom ProII transceiver.
>>  Not a bad price for a spare element.  73 de Fred.
>>BTW  The PROII is the finest piece of communications equipment I have
>>ever had the pleasure to use versus its cost.
>>
>>    
>>