Identifying 453.475mz

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Identifying 453.475mz

Postby Helix » Sat Jan 23, 2016 2:58 pm

I've recently started getting transmissions on 453.475mhz

I believe it's digital, could anyone confirm this - audio clip

Would this be voice or data? I hear this pulsing mainly in the day time, sometimes for a few seconds and other times maybe a minute.

My nearest town is Llanelli in South West Wales, however, it's obscured by a mountain... I live in a semi-rural location I don't have much in my line of sight except the sky so to start hearing TX on 453.475 is strange.

Many thanks
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Re: Identifying 453.475mz

Postby jimh » Sat Jan 23, 2016 3:54 pm

That is a MotoTRBO Digital Repeater. The periodic 'pulses' are data. The longer bursts could be data or voice. Have a look at the DSD+ to help decode this.
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Re: Identifying 453.475mz

Postby SilverShadow » Sat Jan 23, 2016 6:46 pm

The National Botanic Garden Of Wales near Llanarthney have that frequency so that could be where it's coming from :walkietalkie:
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Re: Identifying 453.475mz

Postby m0lsx » Sat Jan 23, 2016 10:15 pm

QSO's between, Daff, Rose & Lilly?? :embarrased: :embarrased: Sorry.
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