| Martin's
Mobile (MNDX 341) |
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MNDX No. 341 was a one of a batch of 200 mobile exchanges produced in
1972 for the GPO and was used in the South East Region. It was designed to
be moved on low-loaders, hence the wheels are only to support the
trailer and allow manoeuvring once on site.
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Index | MNDX
127 | MNDX 295 | MNDX
323 | MNDX 331 | MNDX 341 |
Serial 0063 | |
POST OFFICE MNDX
TELEPHONES
341
TELEPHONE MANAGER
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GPO
72 830 0042 |
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History
MNDX341 was recovered from Teradyne of Bracknell in 1997 by Martin Loach
who is restoring it to an original condition. The unit was built as a 400
line exchange, but was modified by Teradyne to work as two separate exchanges
communicating with each other via a simulated Group Switching Centre (GSC)
using DC2 and PCM signalling. The mobile was kept inside an industrial unit
for eight years prior to it being rescued, so the bodywork was in excellent
condition.
On the Move... |
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Transferring to the low loader outside Teradyne. With an overall height
of more than 12 feet, it's not as easy as you might think!
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Centre Aisle |
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Meters on the left, rows and rows of selectors & relay sets
galore! Collector's dream or maintenance man's nightmare? Checking out the
wiring and finding the correct diagrams is a massive task!
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Getting the first aid kit just right and re-building the battery boxes
takes plenty of time and patience.
Identifying the various and sundry
items and keeping everything clean and tidy is a full
time job !
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You can see more of Martin's photographs on
The Strowger Appreciation
Site
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Teradyne Ltd |
Teradyne had used the MNDX 341 for training and field testing of equipment
that they re-designed to BT specifications. SCOT -the Stepper Central Office
Tester (American in origin) was deployed in many Strowger exchanges to enable
remote routine testing of equipments. The fact that SCOT could be
configured remotely and also report back any problems over the same access
gateway made it particularly suitable for testing unattended exchanges,
especially UAX13s and SAXs. Another test product was 4TEL and it's no wonder
that Teradyne are continuing
as suppliers of test equipment to the industry
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Photos: Martin Loach
Copyright © 1998-2007 THG and
contributors |