and 20 simplified circuits
SCPD 1967. OBSOLESCENT.
work with PA9/22A.
Source Marking Panel used with BA9/22, BA9/22A. Has 51
push buttons with illuminated caps. CHl/42. SCPD 1967.
Miscellaneous Monitoring Desk Panel with ME12/4, AMl/22
for control line cue programme feeds and AM9/8 amplifiers
for pre-hear and multiway working circuits. CH1/37A.
DD 1967. DD Spec 3.459. OBSOLESCENT.
Destination Telephone Desk Panel with relays, keys and
lamps for complete control of two telephone lines,
UN10/12, desk telephone buzzer and isolating circuits for
deriving cue programme from the destination control line.
May be used with PA8/275 to provide access to the lines
through a second handset. CH1/37G. 1967. DD Spec 3.460.
Auxiliary Destination Telephone Desk Panel with
lamps and UN10/12 to operate with PA8/274 to permit
a second telephone handset. CH1/37G.
DD Spec 3.461. ACO. OBSOLESCENT.
Source Telephone Desk Panel for complete control of two
outside source control lines, including connection of cue
programme and ta1kback when desired. Cue programme and
ta1kback can also be connected to the cue line in place of
clean feed, the ta1kback operating in conjunction with
pre-hear selection. May be used with PA8/277. Includes
DD Spec 3.462.
Auxiliary Source Telephone Desk Panel used with PA8/275,
PA8/276 to provide access to outside source control lines
through a second handset. Talkback can be connected to
control or cue lines with accompanying pre-hear selection.
CHl/37G. 1967. DD Spec 3.463. ACO. OBSOLESCENT.
Used in place of PA8/257A on DK2/15 to provide switching
of basic Home Service to
Facilities Routing and Selection Desk Panel for 12 sources
and 12 destinations. Used on Television Centre C.A.R.
Main Desk. Panel 231. 1968. WITHDRAWN.
Alarm Indication Desk Panel giving 17Hz alarm indication
and changeover facilities for main and reserve generators,
and with release or fuse alarm facilities for 24 circuits
strapped to long, short or immediate alarm busbars as
required. CHl/42. 1968. WITHDRAWN.
Pre-setting Desk Panel used with PA17/l38. Similar to
PA8/2l6 but with reduced remote selection and provision
for one more source. 1968. WITHDRAWN.