you've got a serious RF problem.....the B40's are very well shielded so we
really never see this on these instruments.....
check all of your wiring and especially Radio antenna cabble to amke sure
these are not paralleled or wrapped around other cables.try re-routing the
cables and if necessary replace the coax from your antenna lead
tim

wrote in message
oups.com...
I have installed a B40. Only while transmitting on my radio the B40
quickly reads +5 kts and then slowly decays back to zero. Is this
normal and can it be fixed? I tried replacing the power lead to the
vario with shielded wire connected to gnd at one end and this actually
made the problem worse.

Any input would be appreciated.