Was just about to do the same! haven't tried these but seen similar on
other sites:
http://www.delcom.com.hk/externalmicjack.html

Mike


At 21:06 17 January 2012, Bob Walker wrote:
Our club has a Delcom Air 960 panel mounted in a Schweizer 2-33.
Currently

we are using a speaker-mike which jacks into the front of the radio. We
would like to wire the radio with a speaker and two microphones. Does
anyone
know if this configuration is possible with this radio? If so, could you
provide a wiring diagram. Any help will be greatly appreciated.
Bob Walker