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UK Phone Voice Scrambler SA 5063/0 → ← SA 5030
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Telephone set used with scrambler phone
- this page is a stub
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Introduced August 1940 for use on LB
(CBS 1, 2 & 3) and
Magneto systems.
It consists of a Tele. No. 394, fitted with a Key No. 303A switch
asssembly, an 8-wire line cord, a BT20/8 connection box,
and green handset 164.
It is fitted with two push-buttons, labelled
SECRET and NORMAL. 1
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An extra push-button could be added at the centre,
to provide the RECALL facility of a PABX,
or for use with various extension plans. In such
cases the label would be changed accordingly.
Factory assembled SA5031 units are extremely rare, as most of them
were built by engineers in the field from locally available parts.
Such items are generally marked Tele.No.394 on their base and
chassis. Due to wartime shortages, the chassis of Tele.No.396
was sometimes used in these sets as a replacement.
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Later: SCRAMBLE and NORMAL.
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© Crypto Museum. Created: Wednesday 26 May 2021. Last changed: Friday, 04 June 2021 - 08:20 CET.
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![Example of an SA 5031 voice terminal. Photograph kindly supplied by Andy Grant [1].](img/sa5031.jpg)