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NRN and CSR operations in Scotland

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NRN and CSR operations in Scotland 27/01/2021 at 15:31 #136798
Hap
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In relation to the questions regarding the above title.

CSR - Cab Secure Radio was decommissioned in Scotland on the 19th July 2011.
NRN - National Radio Network was decommissioned on the 31st of December 2015, with the exception of the Far North Lines and West Highland Lines which moved onto next Gen RETB.

GSM-R was rolled out between 2007 and 2014. EMU services became live first, followed by the DMU fleet as coverage expanded.

How to report an issue: www.SimSig.co.uk/Wiki/Show?page=usertrack:reportanissue
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NRN and CSR operations in Scotland 27/01/2021 at 20:05 #136809
ajax103
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What is the differences between the original RETB signalling and the next Gen RETB signalling?
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NRN and CSR operations in Scotland 28/01/2021 at 16:15 #136826
danners430
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ajax103 in post 136809 said:
What is the differences between the original RETB signalling and the next Gen RETB signalling?
As far as I'm aware, the newest RETB actually uses a form of GSM-R at its heart rather than NRN

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NRN and CSR operations in Scotland 28/01/2021 at 17:08 #136832
Ron_J
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ajax103 in post 136809 said:
What is the differences between the original RETB signalling and the next Gen RETB signalling?
Very broadly, next gen uses modern digital radio technology rather than the original 80s analogue stuff. Interlocking wise there are few changes.

Last edited: 28/01/2021 at 17:08 by Ron_J
Reason: None given

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NRN and CSR operations in Scotland 28/01/2021 at 19:52 #136836
jc92
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Ron_J in post 136832 said:
ajax103 in post 136809 said:
What is the differences between the original RETB signalling and the next Gen RETB signalling?
Very broadly, next gen uses modern digital radio technology rather than the original 80s analogue stuff. Interlocking wise there are few changes.
Wasn't this a result of the remaining analogue channels being sold off? I recall something about that a fair few years back.

"We don't stop camborne wednesdays"
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NRN and CSR operations in Scotland 28/01/2021 at 20:20 #136848
bill_gensheet
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jc92 in post 136836 said:
Ron_J in post 136832 said:
ajax103 in post 136809 said:
What is the differences between the original RETB signalling and the next Gen RETB signalling?
Very broadly, next gen uses modern digital radio technology rather than the original 80s analogue stuff. Interlocking wise there are few changes.
Wasn't this a result of the remaining analogue channels being sold off? I recall something about that a fair few years back.
Yes, the two would go together.
'Analogue' licensed to operate on one frequency band with the new digital on another. I say 'analogue' as RETB was still sending 'data' but audio tone coded more like an old phone line modem.

Bill

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NRN and CSR operations in Scotland 28/01/2021 at 22:00 #136858
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jc92 in post 136836 said:
Ron_J in post 136832 said:
ajax103 in post 136809 said:
What is the differences between the original RETB signalling and the next Gen RETB signalling?
Very broadly, next gen uses modern digital radio technology rather than the original 80s analogue stuff. Interlocking wise there are few changes.
Wasn't this a result of the remaining analogue channels being sold off? I recall something about that a fair few years back.
They were returned to Ofcom at the end of 2015.

How to report an issue: www.SimSig.co.uk/Wiki/Show?page=usertrack:reportanissue
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The following user said thank you: jc92