View Full Version : Ratzen fratzen CB operator...
11-12-2007, 01:03 PM
Just had to turn off my stereo subwoofer. Some guy's CB broadcasts are coming over it. Hitting my oldest son's PC too. Arrggg!!!
Years ago, when I was a kid (and can no longer be prosecuted :p) a buddy of mine complained that his neighbor, who had a huge tower, was ruining their entertainment pleasure. I knew a bit about electronics and it occurred to me that sticking a thin needle deep into his coax line would short-circuit the signal. To make it even better, I made sure the exposed end stuck into the ground.
What I didn't realize at the time is something a colleague just told me: that we probably ruined his broadcast amp as well. :eek: Anyway, never got any interference after that. :D
Now, I need to go tower hunting...
11-12-2007, 01:19 PM
Just make sure that all your audio equipment is properly connected and grounded and you won't have any problems. That is, if your neighbor is doing the same with his transceivers and antennas, of course.
11-12-2007, 01:21 PM
As far as I know it's all well grounded. This can only be coming in via my old roof antenna I hope, so I'll crawl into the attic and disconnect it. No longer needed anyway.
11-12-2007, 01:30 PM
It's usually ungrounded cables that pick up interference, not antennas.
11-12-2007, 01:39 PM
Unless the transmitting equipment is broken then anything you hear in e.g. stereo equipment is a problem with the stereo, not the transmitter.. I have no experience with CB equipment so for all I know they are rubbish transmitters, but at least with radio ham equipment this is almost always true. There's a lot of very badly shielded TV, radio, stereo equipment out there. (Incidentally American telephones used to be much better than European ones in this respect, at least compared to some countries' phones - replacing your phone with an American one could cure all your problems with your neighbor ham radio operator).
11-12-2007, 01:47 PM
It only shows up in the living room subwoofer (not any other component in that system, including the front and auxiliary speakers) and 1 PC out of 3 deployed in the house. That PC is currently the only one using a TV tuner card, connected to the old roof antenna. Hence my suspicions. And I'm sure my roof antenna has no problem harvesting CB broadcasts...
11-12-2007, 02:09 PM
Sounds to me you're on the right track. (I used to shield systems from radio interference, and sometimes it did come through an antenna/antenna cable into a TV tuner. Often this could be fixed with a simple home-made coaxial induction filter.)
11-12-2007, 02:16 PM
Yeah, a bandpass filter was recommended but first: to the attic!
Later though. Lunch (see definition below) has priority.
1 half liter of Big Red cream soda
1 sandwich made of multigrain bread, 1 slice provolone cheese, 3 thin slices turkey, 2 slices ham, 1 slice muenster cheese, mayonnaise and brown mustard with horseradish. YUM!
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