On Wed, 15 Mar 2006 01:02:08 -0000, Dave Platt wrote:

A quick Google on IC-229 turned up

http://members.tripod.com/~Malzev/cb-funk/ic-229.htm

and there's a PDF scan of the schematic.

So, I think you'll find roughly 8 volts DC sitting on pin 1, when
measured with reference to the microphone ground-return MICE on pin 7.
Short-circuit current to ground would be approx 8 mA.

THat's what I needed, Dave. I will be using the IC-229H microhone
with another radio (Elecraft K2) and I needed to make sure that a
bias resistor was needed,

Many thanks.

--
73 de K2ASP - Phil Kane

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon