As, Bob suggested, the PC power supply is active. Most newer mother boards require a 5VDC line that is used to turn on the main power supply.
Often, there is a rocker switch on the back of the power supply that will turn off the computer entirely. On Sun, 20 Nov 2005 16:51:28 +0100, Martin <[EMAIL PROTECTED]> wrote: >Hello elecrafters, >today i wandered through the house carrying the battery-powered K2 >with a vhf antenna connected to sniff for the noise i have on 80 & >160m. On 160m, snap-on ferrites on 2 network-cables completely >removed the carriers. On 80m the problem seems to be more >difficult: The noise is produced by one of 3 Computers in my buro, >even when it is switched off. The other computers are quiet, also the >one in the shack. >The noise becomes a lot stronger when the computer is on, but only >completely disappears when it is disconnected from the mains. >Its a raspy carrier slowly sweeping up and down the band. > >Any ideas where to start? A snap-on ferrite on the power-cord >helps a little, but not much. > > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
