In article ,
RJH wrote:
You seem to be very unlucky or live in an odd area or have odd
equipment if you're picking up interference on a pickup or mic?

My laptop reports some 20 Wi-Fi signals at usable level round here,
but no problems on the Hi-Fi here. Or with mobile phones which I'd
guess are as common as the above.

Obviously, roaming the radio waves for distant and obscure stuff might
be a different matter.


FWIW, my iPhone's 'polling' (not sure how, what or why) can be heard on
my hifi, FM radios, and work's PA systems in lecture halls. It's a sort
of chirping, and lasts about 10s.

Yes - that does happen, but moving the phone away a few feet should sort
it.

It used to happen frequently on live radio etc broadcasts despite those in
the studio being told to turn off any phones. Rather than go to silent.
It's far less common these days, so something has changed.

--
*Reality is a crutch for people who can't handle drugs.

Dave Plowman London SW
To e-mail, change noise into sound.