Ever read that FCC certification on the back of your machine? Its interference to the outside world is below certain limits and it must accept all interference from the outside. Thanks a bunch. Things have come a long way. The DEC micro-computer I once worked at home on blacked out TV over a nice radius. I thought I was doing the world a service but awaited neighbors' complaints which thankfully never came. How about having a session ruined because someone is nearby with their cellular phone? I am not talking about their voice. Outgoing and incoming calls transmit a nice signature through the audio system, in the computer or external amps, etc. Every time. (Most of this equipment was designed/built before the overabundance of these toys.) I assume the computer stuff is grounded. A little battery guitar amp might not be. No matter, both get the calls. Had to kill the PA last night because the organizer would not kill his phone. What can one do about it?
