R98a. A Western Region Control Keyboard. SO22R406. The 10 keys on the left are labelled 'Railway Control'. The 2 keys top right are labelled' Control Trunks' and the bootm row goes: two 'Railway Control', one 'Magneto tie', 5 'Auto or CB Extns', one 'Earth' and a spare position.
R98b. A Western Region Control Keyboard. SO22R406. The 20 keys on the left are labelled 'Railway Control'. On the upper right row, the first 4 key are labelled 'Auto or CB Extns', and the 5th is labelled 'Earth'. The end 3 are 'Control Trunks'. Below are 8 'Selective Omnibus' and 'Magneto tie' and 'Auto or CB'
R98c. The inside view of a Western Region keyboard.
R98d. A Western Region keyboard with the front opened to show the key wiring and terminal strips.
R98e. A Western Region keyboard front view. The 20 keys on the left are labelled 'Railway Control'. On the upper right row, the first 5 key are labelled 'Auto or CB Extn', the end two are 'Control Trunks'. Below are 8 'Selective Omnibus' and 'Magneto tie' and 'Auto or CB'
R 98f. A view inside the top of a Western Region Control keyboard.
R99a. British Rail Control Suite of racks. The ballast lamps in the second rack are labelled '80v Pos' and 80v Neg' which must refer to the bipolar voltage used for line signalling. The vibrators in the first rack with the AC mains supply are to provide telephone ringing current.
R99b. The British Rail Control Suite of racks from the rear.
R100a. Some sort of control box with the lid open. The left two uniselectors are 25-point: the RH one is 50-point. The fuse blocks are the bottom are labelled 'Line A', 'Line B' and 'Batt. Fuses'. The switch is 'Batt on/off'
R100b. The same box as R100a with the lid on.
R101a. The keyboard in the next picture with the lid opened. The handset jack is fixed to the base. The rear of the dial mount can be seen top left.
R101b. The keyboard with its lid down. The indicators are labelled' Cct Bkr', 'Eng' and 'Call'. The keyswitch is labelled ' L'speaker' and 'NA'
R102a. Selective ringing equipment for Iranian oil services. The upper row of keys goes 'NA' and 2 'Ring' keys followed by 5 'Reset' keys. The lower tow rows are 'Connect A' in the up position and 'Connect B' in the down position.
R102b. An Iranian oil services keyboard opened. Probably not the same one as in R101a - notice the magneto is on the left and the handset on the right on this one.
R102c. Iranian oil services keyboard with the rear cover removed to show the relays and terminal strips.