Other signal transmission paths.

What is it?
If all is working well, your system should only send signals down the coax.
In some situations, signals may be transmitted by other paths - such as power supply leads.

What can suffer from interference from these signals?
Basically, any electrical or electronic equipment could pick up there signals.

Who's fault is it?
Any radio frequency signals sent down such paths as the power supply lead are due to faulty transmitting equipment.

What causes it?
Such problems could be caused by poor transmitter design or a serious fault.
Legal UK CBs should not have any problems of this type - unless they have been seriously messed about with.

What should I do about it?
The key to curing this problem or, better still, minimising the chance of it happening in the first place, is to reduce the amount of CB signal getting to other receiving equipment such as TVs. Measures possible include:

Make sure your CB system is legal:
Interference to other equipment is the No1 reason for a visit from enforcement agencies. Even if you are not to blame, you would get busted for the illegal equipment.

Antenna tuning:
Poor tuning of the antenna can cause signal to be reflected and then radiated from other parts of the system. It is in your favour to make sure that as much of your signal as possible is sent out at the antenna.

Modifications:
If your equipment has been modified, particularly for extra channels, have it checked out to see if it is the problem. An unmodified, legal UK CB equipment should not give out harmonics at a high enough level to cause problems.

CB radio:
If you are sure this is the problem, and the above does not cure it, have your radio checked by someone qualified to properly test it.