I fly a lot in the mountains and find MacCready speed-to-fly information,
completely worthless. Let me explain; Before crossing a ridge, I will fly
slower (below MC), so that I'm assured of making the next ridge. After crossing
the ridge, I may fly faster than MacCready. If I set the proper MC setting in
my computer. I am constantly bombarded with WRONG information coming from the
computer audio.

For the last few flights, I have tried something new. I turned OFF the computer
audio (B-100) and turned on the back-up vario (B-40), Now I have audio only
when going UP and nothing when going down. I locked the computer in cruse mode
and if I need to know what MacCready thinks about the speed I should be flying,
all I have to do is look at the speed-to-fly needle.

One more tid-bit, I had radio interference (breaking squelch) when I installed
the B-100 in my Genesis. I found that the cable to the LCD display was real
sensitive to triggering the interference. When I would bring the radio antenna
cable close to the LCD cable, It would break squelch. I completely solved the
problem by keeping these two cables 6 inches apart. I also found the NMEA cable
from the Cambridge GPS would trigger the radio squelch, if it was closer than
6 inches to the LCD cable.
Cheers,
JJ Sinclair