SE13
In memoriam
RIP 23-Oct-2013
Glorious Gooner
Posts: 9,737
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Post by SE13 on May 16, 2009 3:43:03 GMT
Another single part question today:  *Click image for a larger version* |
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Post by ruislip on May 16, 2009 4:41:45 GMT
Hampstead
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Deleted
Deleted Member
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Post by Deleted on May 16, 2009 7:58:06 GMT
As a side note I'd be interested to know WHAT it is/ does?
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Post by carlovel1 on May 16, 2009 8:24:03 GMT
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Post by astock5000 on May 16, 2009 9:16:49 GMT
Hampstead.
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Deleted
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Post by Deleted on May 16, 2009 9:32:54 GMT
chalk farm southbound platform 2
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mrfs42
71E25683904T 172E6538094T
Big Hair Day
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Post by mrfs42 on May 16, 2009 10:59:00 GMT
No picture.  |
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Chris M
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Post by Chris M on May 16, 2009 11:03:48 GMT
No picture. Server problems again, hopefully fixed soon technical explanationThe server was rebooted remotely for a kernel update but it seems it took exception to something and kernel paniced. It is currently being worked on though. |
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mrfs42
71E25683904T 172E6538094T
Big Hair Day
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Post by mrfs42 on May 16, 2009 12:05:33 GMT
I'll go for Hampstead too, I think the round thing might well be something to do with a (possibly) 600v shore supply; but I'd have to think a bit further about it!
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SE13
In memoriam
RIP 23-Oct-2013
Glorious Gooner
Posts: 9,737
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Post by SE13 on May 17, 2009 6:56:33 GMT
chalk farm southbound platform 2 My answer sheet says: Chalk Farm - south end of southbound platform As for the use/purpose of said "thing" I have no explanation, perhaps ChrisM might know, or anyone working at Chalk Farm..... |
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Chris M
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Always happy to receive quiz ideas and pictures by email or PM
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Post by Chris M on May 17, 2009 8:34:13 GMT
Unfortunately I can't help with the identity or purpose of the object - I was hoping that some knowledgeable person would see the quiz picture and say "this is a XYZ"!
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Post by railtechnician on May 20, 2009 15:22:39 GMT
Unfortunately I can't help with the identity or purpose of the object - I was hoping that some knowledgeable person would see the quiz picture and say "this is a XYZ"! I haven't had time to look in at the quiz for the last few days but I am that knowledgeable person! The large enclosure is a W&Q MDF, that is a Wiltshire & Quick enclosure with a communications Main Distribution Frame (a place where circuits are cross connected) housed within. The round object is a telephone system 2Mbit PCM (Pulse Code Modulation) Regenerator housing with a 50 pair cable tail connecting it to the MDF. The regenerator is part of the telephone transmission system between Embankment and Baker Street main telephone exchanges and Golders Green satellite telephone exchange and handles multiplexed telephone calls and UTS (Underground Ticketting System) data. Most of the main telephone network uses 34Mb and higher fibre optic transmission but the smaller outlying telephone exchanges still use 2Mbit, a 2Mb system carries 30 telephone or data channels and the regenerator in the picture can house up to ten 2Mbit PCM systems. The 2Mb regenerators are to be seen all over the combine but are more usually noticed trackside bolted on the side of the green signal type kiosks which are also MDFs. |
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mrfs42
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Big Hair Day
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Post by mrfs42 on May 20, 2009 15:48:54 GMT
Coo. Thankyouverymuch for that explanation - I hadn't thought of it being telephony related!
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