PAll
PAll/l-lO
PAll/ll
PAll/IS
PAll/16
PAll/17
PAll/18A,18B
PAll/SOl
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PAll INDICATOR PANELS
Accommodate drop indicators 1 to 10 on 483mm x 45mm panel.
1956. OBSOLESCENT.
Used at North Hessary Tor
vision services controlled
Television Interview studio.
OBSOLESCENT.
for switching of sound and
by PA6/l4 at Plymouth
483mm x l78mm. 1957.
Indicator Panel used on the Manchester-Carlisle Switching
system to indicate the condition of relays in PA17/l05A.
483mm x 44mm. 1966. WITHDRAWN.
Indicator Panel with a relay controlled mains lamp to
indicate when C06/505 is operating. Used with C06/503,
C06/504,
C06/606.
483mm
x
89mm
panel.
1968.
DD Spec 11.58. WITHDRAWN.
Indicator Panel, used in PCM Coder BAl/4 to provide an
indication whether the equipment is is in use and, if so,
that its destination is Wrotham and/or regional. Also
provides a fault condition indication. Panel, 483mm x
89mm. DD 1971. OBSOLESCENT.
Indication Panels, used in BAl/5 to provide indications
whether the equipment is in use and of a fault condition.
Two 483mm x 89mm panels. DD 1972. OBSOLESCENT.
Indicator Panel used in EP5/509 for mounting a number of
IN4/50l. Printed board 6l0mm x 25mm. 1969. WITHDRAWN.
=============~=============-=================================~============
PAll Sub Group not available for new designs DD 1977.
PA12/2
PA12/3
P A12 / 4
PA12/11-27
PA12/28
PAl2 KEY OR KEY/LAMP PANELS
483mm x 89mm Panel for alarm and change-over keys for 2
PN3/7 used on Greenwich Time Signal System. 1958.
DD Spec 2.123. OBSOLESCENT.
483mm x l3mm Panel with 6 sets
cord
circuits
at
Cardiff
WITHDRAWN .
speak/ring keys for EMX
Operations Centre. 1965.
483mm x l3mm Panel with 90 non-locking illuminated buttons
for monitor selection and P.T.I. at Manchester Operations
Centre. 1965. WITHDRAWN.
483mm x 89mm panel for 1 to 17 P.D. keys.
OBSOLESCENT.
1959.
483mm x l78mm Panel with 96 push button, 2 digit switches
and LI/l used to control a 60 way relay monitoring system,

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