Audio frequency range for Police radio

Hi

Can anyone tell me the audio frequency range of a UK police radio ie the type officers use on patrol? I have some high frequency hearing loss at the 4khz level. If however, the audio range of a police radio is less than 4khz then presumably my hearing loss becomes irrelevant in that respect as no one would be able to hear the higher frequency sounds?

Really appreciate any insight you can offer.

Thanks

Mark