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BID - 50

Portex
Information
aus CRYPTO MACHINE
more information
PORTEX/BID50

The Canadian Army used the Portex system in the early 1960's but it is not known how long it remained in service.
portex_front_view1.jpg
portex_top_view_interior.jpg
With top cover in the up position.
portex_with cover_on.jpg
This is the front panel of the Portex with BID/50/1 nameplate visible.
portex_carrying_gear.jpg
Carrying handles unfolded.
portex_rotors2.jpg
Various vews of the Portex. (All photos in this table by John Alexander, G7GCK Leicester, England.
The green coloured Portex displayed at the Royal Signals Museum appears to be a later version of the black coloured Portex. There is a series of pushbuttons above the rotor slots. Does anyone know the purpose of these pushbuttons? Contact : jerry.proc@sympatico.ca)