The only problem with Microair, especially if you are trying to run two of them,
is that their key line does not conform with aviation standards. The aviation
standard is that the transmitter is placed into the transmit mode when the key
line drops below 3 volts. This allows for a couple of isolation diode drops in
a typical dual-radio or audio panel installation. The Microair must be brought
below 0.6 volts on the key line to go into the transmit mode.

Just a caution...

Jim




Richard Riley
shared these priceless pearls of wisdom:

-I've had good experience both with MicroAir and X-Air, from Australia.


Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com