quant,
I think it happens about this time of year... when it starts getting
cold.
I've never had that experience, however there are a lot of those mini
connectors, are you always using the same earphones?
BTW- When connecting to amp with a longer cable, I also get
weird "short wave" reception on the AM band.
That's nothing, many years ago I fixed up an old reel to reel tape machine
and connected a long extension to the mic input. Before I connected the mic
to the extension I grounded the center lead and got a local radio station
just as clear as if it were coming from a tuner. In fact I recorded music and
programs. Audio amplifiers can sometimes rectify (detect) RF signals, in this
case the mic cable was a perfect tuned circuit for the station and the tube
amplifier in the tape machine was a detector.
As for headphones causing short wave stations on an AM radio, the earphone
'antenna' must be de-tuning the input circuit as well as picking up the SW
station. RF circuits are strange creatures and sometimes produce some
strange results. Maybe it's those solar flares. :-)
Jim
