UN21
408 -
Television
sound LT
WITHDRAWN .
Centre
bay.
News Te1ecine Machines. Mounted on
CH1/44.
DD 1968/69.
DD Spec 3.S0S.
UN21/10
Communications Relay Unit for
Te1ecine machines. Mounted on
DD 1968/69. WITHDRAWN.
Television Centre News
sound LT bay. CH1/44A.
UN21/11
Sound Relay Unit for Pye News Te1ecine machines in
Television Centre Spur. Mounted on adjacent sound LT bay.
CH1/44A. DD 1968/69. WITHDRAWN.
UN21/12
Sound Relay
remote desk
WITHDRAWN.
Unit for
controlled
Television
position.
Centre News Te1ecine
CHl/44. DD 1968/69.
UN2l/l3
TARIF Relay Unit for
remote desk control
WITHDRAWN.
Television
position.
Centre
CHl/44.
News Telecine
DD 1968/69.
UN2l/l4
Identification Relay Unit for Television Centre News
Te1ecine remote desk control position. CH1/44.
DD 1968/69. WITHDRAWN.
UN2l/lS
Supervisor's Intercom Relay Unit containing miscellaneous
relays for control desk supervisor's intercom for
Television Centre News Te1ecine. CH1/44. DD 1968/69.
WITHDRAWN.
UN21/l6
Intercom Voice Frequency Relay Unit containing voice
frequency relay and associated components for supervisor's
intercom for Television Centre News Telecine. CHl/44.
DD 1968/69. WITHDRAWN.
UN2l/17
On Air Relay Unit containing IS relays
resistive -SOV 'on air' indication
DD 1969. OBSOLESCENT.
each converting a
to +SOV. CHl/44.
UN21/18
Relay Panel used in PA18M/14. CHl/18E, peg SO. DD 1969.
WITHDRAWN .
UN21/l9
Monitoring
input of
Driven by
input is
DD 1969.
Relay Unit used in MNSM/2 for se] ~cting one
a series in conjunction with other UN2l/19s.
GE2/4 and includes bypassing arrangements when
temporarily unused. CHl/43A, coding 1, 4, 7.
DD Spec 3.S0S. OBSOLESCENT.
UN21/20
Path Transfer Relay Unit used in EPlM/ll at Broadcasting
House to carry out circuit changes for change of path for
digital signals. Printed board with 33 way plug, coding
3, 11, 19. DD 1970. CANCELLED.
UN21/2l
Switching
switching
DD 1970.
Relay Unit used on
system in conjunction
WITHDRAWN.
Bristol-Mendip
with UN20/4.
remote
CHl/18.
UN2l/22
Switching
switching
Relay
system.
Unit used
Contains
on Cardiff-Wenvoe
programme relays.
remote
CHl/18.

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