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. 
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This is the front panel of the Portex with BID/50/1 nameplate visible.
portex_carrying_gear.jpg
Carrying handles unfolded.
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Rotor assembly. (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. These pushbuttons manually control the stepping of the rotors to the appropriate setting before beginning encryption/decryption.
 
portex_display.jpg
Above and below: Portex equipment taken at Blandford Forum Royal Signals Museum, Dorset, UK.
portex_machine.jpg
portex_rotors.jpg
Rotor storage case - the rotors were quite similar to Typex rotors except Portex rotors were smaller. (All photos courtesy John Alexander, G7GCK Leicester, England.) 


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Nov 22/15