B40 rf interference problem

On 12 Mar 2005 09:13:43 -0800, John wrote:

SWR measured 1.25 and ~38 ohms at 123 Mhz. I connected the instrument
directly to the antenna using the bnc that gets connected to the radio.
Does this also prove the bnc conenctor is good or do I need to
disassemble it?

Thanks

Seems a pretty good reading. Yes, it will include the connector.
What type of radio is it ? From your symptoms there does seem to be a
strong RF field near the vario. Maybe the radio itself is leaking RF ?
An alternative source of the RF could be the power wiring to the
radio. Does this run close to the wires for the averager ?
If so, try separating the two sets of wires by a few inches, and see
if that makes a difference.
Cheers, John G.