Here's a simple test for you. Put a voltmeter across the battery terminals
of the fin battery and record the voltage when you key the radio. Then do
the same on your main battery which you said works fine. You will most
likely see a lower reading on the fin battery. If the battery no longer has
the capacity to trade current for voltage than this test will show that.
The radios have voltage regulators in them but they need something to
regulate. Usually a volt or two above the desired output. I am betting a
new battery is all you need. Craig



Andrew Warbrick wrote in message
...
My Microair seems to be very sensitive to low battery
voltage and to noise on its power supply. It receives
fine connected to either battery but I can only transmit
successfully when it's connected to my fin battery
and the main battery is running everything else. I'm
considering a 12 to 15V DC to DC converter to keep
it happy but at about 50 pounds it will be a pricey
fix (though not as pricey as buying a Becker).

At 19:06 30 August 2003, Dfkroesch wrote:
I traded in a Microair that I was unhappy with for
a Becker that I have been
very happy with...That was the expensive way to buy
a Becker.

Some people seem to have good luck with their Microairs
and a lot of others do
not.