Used on RD4/2 and
Used at Penmon for switching receiver outputs and testing
equipment at Colwyn Bay and line testing equipment at
Bangor. 1956/60. OBSOLESCENT.
Used at receiving terminal
equipment for selecting
DD Spec 2.143. OBSOLESCENT.
on voice frequency switching
Ringer Control Panel used with PA17/94.
indication of failure. 483mm x
DD Spec 3.283. OBSOLESCENT.
Contains keys for
alarm lamps for
First used at Penmon on d.c. signalling circuits for
remote control of VHF transmitters at Llanddona where
lightning protection precautions are necessary. 483mm x
133mm HM/IC. 1960. WITHDRAWN.
Used in TE1/4 for setting
step with line test signals.
1960. DD Spec 2.153. TI.L.5.
up test circuit conditions in
Includes FL3/2 and NE3/1.
Panel used on BA4/4.
Used at Plymouth Television Interview Studio for switching
sound and vision services at North Hessary Tor. CH3/1C
Chassis. 1960. OBSOLESCENT.
Panel, Control (Receiving) used in OT1/3. Includes
amplifiers on cards AM1/2, AMS/2, 2 AM5/3, and
miscellaneous apparatus. Superseded by PA6M/61. 1960.
DD Spec 2.172. OBSOLESCENT.
Panel, Control (Sending) used in OT1/3. Includes
AM1/2, AM1/22 , AMS/2, AMS/3, and miscellaneous
apparatus. Superseded by PA6M/60. 1960. DD Spec 2.172.
483mm x 89mm panel used on remote control system
Rowridge-Southampton. 1960. OBSOLESCENT.
Panel, Control, Selective and Matrixing used at Kirk
O'Shotts in place of PA6/8 on Voice Frequency Remote
Control System. 1961. DD Spec 2.183. OBSOLETE.
Panel, Control, Selective and Delay, first used at
receiving terminal on VF Switching System between Bristol
and London to detect the tones. 483mm x 67mm. DD 1962.
DD Spec 2.204. OBSOLESCENT.
Used at Fort WiIIiam to control PA17/l18 at Ballachulish