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Chester Zoo

PostPosted: Fri Dec 29, 2017 4:35 pm
by AndrewIrvine
440.050 Chester Zoo CC2 Ch2
CC2 Ch2
CC2 Ch3
CC2 Ch1 / Ch3
All RAS

Four different talkgroups noted so far between the 5 above.

Re: Chester Zoo

PostPosted: Fri Dec 29, 2017 5:10 pm
by thelad
So has 440.225mhz gone now?

Re: Runcorn / Widnes / Warrington
Postby AndrewIrvine ยป Tue Aug 08, 2017 5:18 pm

440.225 Ch2 CC3 RAS Chester Zoo (The North Of England Zoological Society)

Re: Chester Zoo

PostPosted: Fri Dec 29, 2017 5:57 pm
by AndrewIrvine
They still have it, I've just heard the channel 4 one, I heard the rest the last time I was down.

440.225 / 425.725
Ch2, Ch3 & Ch4 all CC3 all the same talk group. No channel 1 heard unless that's just for emergencies.

Re: Chester Zoo

PostPosted: Fri Dec 29, 2017 6:28 pm
by AndrewIrvine
Just heard another talk group in use on that frequency.

Re: Chester Zoo

PostPosted: Sun Dec 31, 2017 8:29 pm
by AndrewIrvine
440.450 Ch5 CC5 RAS

Also the zoo, apparently. Failing that, Carrington Power Station in Manchester. I've only heard a radio check being asked for

Re: Chester Zoo

PostPosted: Mon Jan 01, 2018 12:22 am
by AndrewIrvine
440.650 Ch7 and Ch8 DCC7 RAS Chester Zoo Security. The channel changes in conversation.

Re: Chester Zoo

PostPosted: Mon Jan 01, 2018 1:50 am
by bigboyblue
Sounds like a capacity plus system, or a psudo trunk on hytera.

Quick way of telling - does it just change slot on the same freq, or does it change frequency through the conversation ?

Re: Chester Zoo

PostPosted: Mon Jan 01, 2018 2:06 am
by AndrewIrvine
It has channels, not slots. It changes channels.

Re: Chester Zoo

PostPosted: Mon Jan 01, 2018 10:11 am
by bigboyblue
Digital doesn't have channels, it has talkgroups.

And each repeater has 2 slots, per repeater. They can be used by more than one talkgroup.

That's why its important to notice if the conversation changes repeater or not - if its staying on the same repeater and alternating between slot 1 and slot 2, then its a single capacity plus system. If the conversation goes onto a different repeater, different frequency, then you've got a proper capacity plus system, and you may be missing repeaters from your list.

Capacity plus can be a bit weird sometimes - it sits using one repeater for most of the time, then moves around when you least expect it. Meaning if you don't have all the repeaters programmed in, you can loose bits, half, or all of a conversation. Usually at a time when the most interesting conversation goes on.

Re: Chester Zoo

PostPosted: Mon Jan 01, 2018 1:04 pm
by AndrewIrvine
I'm listening via a discriminator tap in my Pro 2042, the readout on my laptop screen says channels, it also says which slot if that's what it is. I've mentioned channels before on more than this thread. Minus the talk group, I put on here what comes up on screen. I'll wait until it comes up again, but being New Years Day it might be tomorrow, when I will be in Liverpool and Warrington.