radio interference

On Apr 28, 7:02*pm, ryanglover1969 wrote:
I have a question for all the electronically minded pilots out there.
Every time I transmit my vario goes crazy. The funny thing is that
when the colibri and or the Ipaq isn't connected it doesn't go crazy.
My set up is as follows: LX 1600vario
* * * * * * * * * * * * * * * * * * Dittle FSG 2T radio
* * * * * * * * * * * * * * * * * * Colibri data logger
* * * * * * * * * * * * * * * * * * Ipaq 3600 running SeeYou mobile

What's the solution? I got some ferrite beads and put them in various
locations with no success.
should I shield the cables from the vario to the colibri and Ipaq???

Ryan,
have you checked the stability of your power supply? I run a very
similar set-up: Becker 3201, LX20, LX1600 and an iPAQ but have a very
good battery. Place a digital voltmeter between and a digital ampere-
meter inline (both with min.-max hold function) with the power leads
and key the microphone. There is a good chance that the power supply
collapses momentarily below the minimum required to run everything
properly.
Uli