London Bus change over to DMR

Scanning radio frequencies for the South East
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Metradio
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London Bus change over to DMR

Post by Metradio » 04 Nov 2018, 14:02

Testing of the London Bus DMR Network has started. From where I live I am receiving DMR in the clear from them on 139.66875MHz, this has been receivable for the last 3 weeks or so. Eventualy the system will be encrypted.
Their current MPT1327 and the new DMR Tier III system use the frequencies between 139.500 and 140.500MHz..

Mike

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Re: London Bus change over to DMR

Post by Wiggler » 07 Nov 2018, 15:32

Does this testing and upcoming change explain why I can now hear drivers on the 1to1 calls? In the past I could only hear the controller during 1to1 calls but on on group calls I could hear all drivers on the route. Now I can hear both sides all the time.

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Re: London Bus change over to DMR

Post by Metradio » 07 Nov 2018, 16:37

Yes I think it does...

Mike
Connect Systems CS750 and CS800, Hytera PD-365, Motorola DP4600.
Raspberry Pi 2 and DV4Mini HotSpot.
AOR AR-DV1 Digital Voice Receiver / eSPY on ARD V1.

Whistler WS1088 / TRX-1 / Whistler Q / UBCD3600XLT / WTR Browser.

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Re: London Bus change over to DMR

Post by radiosification » 07 Nov 2018, 22:11

I'm rather disappointed, I can't hear the new DMR system still
If you're interested in digital voice, check out my YouTube channel:
http://www.youtube.com/radiosification

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Re: London Bus change over to DMR

Post by Metradio » 08 Nov 2018, 10:01

From Slough I can only pick up the one frequency, but a listener East of London has reported three live DMR frequencies from his location..
Might be worth a search of their band looking for the DMR beacon..

Mike
Connect Systems CS750 and CS800, Hytera PD-365, Motorola DP4600.
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Re: London Bus change over to DMR

Post by trainspotter375 » 21 Nov 2018, 12:44

radiosification wrote:
07 Nov 2018, 22:11
I'm rather disappointed, I can't hear the new DMR system still
indeed picking up two very active freqs from the old 2217 (8A9) site. have started to compile a list of the talkgroups but will be a waste of time once it goes encripted, radiosification if you pm me i can supply you the actual freqs and colourcodes/timeslots

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Re: London Bus change over to DMR

Post by Metradio » 21 Nov 2018, 14:40

Rereading the original TFL tendering requirements, was to have the "ability for encryption" and am not 100% they will implement the facility - only time will tell..

If you have a DMR receiver, the active frequencies can be found by searching between 139.500 and 140.500MHz, the active frequencies send out a constant beacon so are easily found..

Mike
Connect Systems CS750 and CS800, Hytera PD-365, Motorola DP4600.
Raspberry Pi 2 and DV4Mini HotSpot.
AOR AR-DV1 Digital Voice Receiver / eSPY on ARD V1.

Whistler WS1088 / TRX-1 / Whistler Q / UBCD3600XLT / WTR Browser.

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