CB and HF radios operating below 30 MHz can cause audio interference.
The fault lies with the device such as:  the telephone unit, Stereo, computer speakers.
The wires to the speakers, phones, act like an antenna and put the radio RF back into the audio amplifiers.
The speaker wires have to be filtered to stop this.

It is sometimes difficult to tell the owner of the speaker equipment that it is their problem.
The radio is seldom the problem.  Industry Canada will confirm the situation.

Problem can "sometimes" be cured or lessened by moving the antenna further away from the speakers/phone.
Ferrite cores have to be put on the speaker wires (or telephone wires)to stop the problem.
Ferrite cores are like a "doughnut" about 1.5 inches in diameter.
The devices are unplugged and the wires wrapped through the Ferrite hole about 10 or more times.
The core is put near the plug end or tried at the other end. Which ever works !!
Ferrite cores are available at most Electronics parts suppliers.

NOTE: Prices are subject to change without notice.

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