| If you are suffering interference (being received) on your vehicle CB which stops when the engine is switched off, you need the NF20 noise filter, which helps most forms of interference.
The low pass filter is fairly essential if you are wanting to use an amplifier - it minimises the possibility of causing interference to other radio users like the emergency services and taxis etc.

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Noise Filter NF20
Small black box - designed to filter interference in the power feed to CB radio, stereo etc. 20amp max current (average CB takes 1.5amp) Two wires in, two wires out, can be mounted on bulkhead (includes mounting screws)......
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£12.00
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