> I've been meaning to embed the GSM "I'm resyncing with the cell" > noise into a track - that noise even seems to make its way into > balanced cables. I've noticed a noise coming from mobile phone handsets - it must be a pretty powerful field, since it can also disrupt the display of a CRT monitor. An unshielded 15" PA speaker in the same room only produces a slight ripple on the display, but a text message arrives on a phone and the display is all over the place... And to think - people walk around with one of these clamped to the side of their head, just a few millimetres away from their brain - a subtle and complex electrical system if ever there was one! Cheers Daniel