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PAl
PAl MISCELLANEOUS PANELS (EQUIPPED)
PAl/I
Holding and Sequential Monitoring Panel to replace HLD/l
at Towny. 1956. DDHB 2.69. OBSOLESCENT.
PAl/2
PAl/3
1956. DDHB 2.69. CANCELLED.
Panel, Fuse and Relay. 483mm panel version of FRR/2.
Includes 10 way fuse mounting and accommodation for 12
Type 3000 relays. 1956. OBSOLESCENT.
PAl/4
Phantom Control
remote switching.
OBSOLESCENT.
(Sound) Panel for
Used at Cardiff
reserve signalling
and Bristol. 1957.
PAl/5
Holding Panel used at remote switching control point for
VHF transmitters. Operates PA17/8. Suffixes indicate
modified version for operation of modified versions of
PA17/8. 1957. OBSOLESCENT.
PAl/6
PA1/7
Holding Panel designed for Belfast. 1957. OBSOLESCENT.
Lacing Bar Panel 483mm x 45mm, used with U Link Panels
D66290. Suffixes A and B indicate type of lacing bar.
1957. OBSOLESCENT.
PAl/8
Earth Voltage Corrector Panel to neutralise excessive
voltages on long earth return circuits. Used with PRS/l
in
the
Debit/Credit Line
monitor
system.
1958.
OBSOLESCENT.
PAl/9
Holding Panel used
PA17/32 at Meldrum.
at Aberdeen for phantom
1958. OBSOLESCENT.
control of
PAl/lO
Oscillator Mounting and Distribution Panel with two OS2/5.
Used in monitoring VHF rebroadcast transmissions into
unattended or semi-unattended stations. 1958.
DD Spec 5.48. TI.T.lO. OBSOLESCENT.
PAl/ll
Panel, Earth Voltage Compensator used on phantom circuits
employed for signalling and control purposes where
difference of potential exists in the earth between
stations. Valve: ECC84. 1958. DDHB 5.19. CANCELLED.
PAl/12
Panel, Monitor, 50 way. Switching apparatus for selection
of programme monitoring points. 483mm x 489mm.
Broadcasting House Extension. DD 1958. DD Spec 3.217.
OBSOLESCENT.
PAl/13
Panel, Monitor, 150 way. Switching apparatus for
selection of programme monitoring points. Broadcasting
House Extension. DD 1958. DD Spec 3.345. OBSOLESCENT.
PAl/14
Originally designed for Westerglen. Modified and recoded
PAl/4. 1958. OBSOLESCENT.
PAl/15
Capacitor
lightning
Panel containing l~F
protection equipment
capacitors
in d.c.
used with
signalling

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