New emergency services radio under threat

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Re: New emergency services radio under threat

Postby G4RMT » Tue Apr 11, 2017 10:14 am

Inversion puts of casual users - so probably ok from the law point of view - but sounds horrible when put back - worse than digital.

Airwave is just a blip - a bad system, rushed through the design phase and let's be honest - if they could fix it, they would have. Coverage is much, much worse than cellular. Any large area cell system, which is what airwave is, cannot compete with small cell sizes.
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Re: New emergency services radio under threat

Postby m0lsx » Tue Apr 11, 2017 11:31 am

Skirge wrote:I think in terms of PMR it's Motorola who offer an inversion encryption on their radio's, I know that can be decrypyed on a pc but I think a lot more companies will look at using that system.


The Alinco DJ-X3 resolves inversion. It's what the Police used prior to Airwave & it's why I brought my DJ-X3 about 20 years ago.
I know there are those who say that the old Police encrypted system could not be listened to. But I did listen & regularly to stake outs etc. It sounded like Donald Duck on Helium, but it was listenable.
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Re: New emergency services radio under threat

Postby Metradio » Tue Apr 11, 2017 12:11 pm

Before Airwave most police forces used the macoroni MASC rolling code voice inversion encryption system - the inversion point kept moving around. Very very difficult to listen to, you might get the odd word now and again..

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Re: New emergency services radio under threat

Postby m0lsx » Tue Apr 11, 2017 1:23 pm

Metradio wrote:Before Airwave most police forces used the macoroni MASC rolling code voice inversion encryption system - the inversion point kept moving around. Very very difficult to listen to, you might get the odd word now and again..

Mike


It was not difficult with the DJ-X3, you simply rotated the knob on the top of the radio every so often as the audio got harder to listen to. You never actually lost any audio & it was not a constant rotation that was needed, just an every so often turn.
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