Interference

Electrical interference

In the section dealing with television interference two types of interference were described. lithe noise on your radio lasts quite some time then H is probably caused by an appliance of the kind listed on page 5 under TV interference type I. lf the noise is rather like a short 'click' or 'buzz' then it is probably caused by a switch in an appliance of the kind listed on page 6 under TV interference type2.

The way to find the source of the problem is the same as suggested for televisions, so read the advice on 'How to find the source of interference' given on page 6.

Radio transmitter interference

Radios can also suffer from radio transmflter interference where often the voice of the person using the CB or other type of radio transmflter can be heard. This type of interference is usually the result of leads connected to the radio picking up the unwanted transmission. Therefore radio transmitter interference is more common in hi-fi systems which have a number of leads connecting the units together In particular the leads to the separate loud speaker units are often found to be the leads which are picking up the interference.

You can try making the leads as short as possible, making them into a neat bundle as shown if you cannot shorten them. See Fig. 6

If this does not help. you can try moving the position of the radio to another part of the room. If this fails, go to your dealer He should be able to advise you about either using special screened cables or lifting components to filter out the interference.

Audio equipment

Audio equipment which does not incorporate a radio tuner is designed to reproduce music and not to receive radio signals. It is theretore outside the scope of this booklet. It you are suffering interference, a modification to the equipment will be necessary. Please consult your dealer

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