On Wed, 30 Nov 2005 03:44:17 GMT, "W. Watson"
wrote:

If so, how do I track it down?

Hi OM,

You have already related other experience where you shared the same
circuit as a noisy source (sharing the same circuit is easily
identifiable as being on the same breaker). Moving to another circuit
can be a solution. If it provides relief, then noise was coming by
conduction (through the wires) rather than radiation (over the air).

Insofar as your specific weather related symptoms, this is usually
related to a loose and corroded ground connection. The first place to
start is with your panel's service ground. If you have other ground
rods, then check them and INSURE they are also connected to the
service ground.

In your shack, do not daisy-chain grounds - use a star configuration.
However, you will probably still have mixed grounds with equipment
interconnections (and some of them are obvious and in your face and
are still invisible). That is OK if you also have the individual
equipments grounded in that star configuration. One of those
invisible gotchas is the equipment interface to a computer, with a
dial-up modem, its connection to the phone line and its own ground
(if in fact it exists). This ground path is one you stare at every
day and never see - unless lightning is looking for ground in through
it and into your shack.

To "track it down" requires that you pull every plug, break every
breaker and listen (you will need a battery powered, ungrounded
receiver that exhibits the problem to do this). Replace each one at a
time until you re-achieve your problem - take one step back and focus
there.

73's
Richard Clark, KB7QHC