PAl
- 230 -
PAl/72
Drive Changeover Panel used on BA13/l5, BAl3/l6 to switch
between outputs of main and standby EP7M/lO when two
EP7M/lO are fitted. Also splits output of selected
EP7M/lO into two to drive separate amplifiers. Includes
FL6/l8, UN3/32, BXl/ll. CH3/lB. DD 1971. DD Spec 5.198.
OBSOLESCENT.
PAl/73
Power Supplier Panel used on BA13/l5, BAl3/l6 to feed two
PA9/l5. Comprises two 3lV, 20A constant voltage
transformers and two rectifiers on 483mm x 310mm panel
occupying 470mm of bay height. DD 1971. DD Spec 5.195.
OBSOLESCENT.
PAl/74
Power Supplier Panel similar to PAl/6l but with 3 Farnell
SSB/H units giving 3 outputs of 30V-60V, lA. 483mm x
l33mm panel. 1971. OBSOLESCENT.
PA1/75
Drive Changeover Panel for switching between outputs of
main and standby drives of VHF transmitters. Similar to
PAl/72 but without FL6/18 and with 24V instead of SOV
relays. CH3/lB. 1971. OBSOLESCENT.
PAl/76
PAlM/77
Recoded PAl/563. OBSOLESCENT.
Central Logic Panel, used in PCM Decoder BAl/S for central
processing logic. Special Imhof l78mm panel with ISEP 33
way connectors. DD 1971. OBSOLESCENT.
PAl/78
Central Logic Panel, used in PCM Coder BAl/4 for central
processing logic. Special Imhof l78mm panel with ISEP 33
way connectors. DD 1971. OBSOLESCENT.
PA1M/79
Audio Limiter Panel, used in PCM Coder BA1/4.
Imhof l33mm panel with up to 13 audio limiters.
Superseded by PAlM/108. DD 1971. OBSOLESCENT.
Special
AM6/l0.
PAl/80
Identification Panel used on PCM Coder BAl/4 and Decoder
BAl/5 to identify channel allocation and operating mode.
Panel 482.6mm x 44.5mm. DD 1972. OBSOLESCENT.
PAlM/8l
Data Control Panel, used in BAl/4 to read the state of a
series of relay contacts and assign a binary number to
each state. Imhof 133mm rack fitted with connectors type
G06 on printed circuit board. DD 1972. DDHB 6.121.
OBSOLESCENT.
PAI/83
Power Supplier Panel, similar in size
accommodation for two power suppliers
supplier changeover unit on ISEP module
boards. SCPD 1972. OBSOLESCENT.
to PN3/23, with
and one power
printed circuit
PAI/98
U Link Routing Panel designed specifically to provide
various combinations of routes for radio PCM signals,
using only U links. Internal circuitry detects the route
chosen and gives outputs suitable for driving the PA8/409.
Superseded by PAl/Ill. DD 1976. OBSOLESCENT.
PA1/501
Servicescope and Filter Panel used on Transatlantic Cable

30