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l2-way Intercom Desk Unit for use in offices. Includes
PA8/283 or PA8/285 with Panel No.23l mounted in CHl/2.
DD 1968. WITHDRAWN.
Monitor and Processing Unit used in MN2M/7 at the input
and output of a transmitter to provide d.c. outputs for
comparison in UN20/l4. CHl/12A, pegs 21, 42. DD 1968.
DD Spec 5.150. ACO. OBSOLESCENT.
lO-Pair, 38l0mm, Cable Unit for inter-connection of
apparatus. Comprises 38l0mm length of type EMT 9225 cable
consisting of 10 individual screened fully flexible pairs,
double screened overall, encased in tough grey plastic
sheath, and terminated each end on Tuchel 26 way male
connectors (with protective shell). DD 1968. WITHDRAWN.
Front End Unit, Band 11, used in VHF/FM monitoring and
rebroadcast receivers. Includes RF amplifier, mixer and
oscillator and provides greater gain and sensitivity than
UNl/39 which it supersedes. Suffix A indicated 50~ input.
DD Spec 5.142.
Matching Unit used in EP2/l for matching various units and
lines. Includes variable attenuators and transformers.
DD Spec 2.285.
Condenser Microphone Regulator Unit fed from PS2/75
providing decoupled h.t. and current stabilised l.t.
supplies for one microphone, with a selection switch for
the type of microphone. 8 are mounted on PAlM/64.
CHl/18C. Radio 1968. ACO. WITHDRAWN.
Reverse Talkback and Intercom Unit providing reverse
talkback and prehear facilities, or alternatively an
intercommunication system. Includes necessary amplifiers,
relays and a loudspeaker. Powered from 50V supply.
CHl/37C. Radio 1968. ACO. WITHDRAWN.
Reverse Talkback and
reverse talkback and pre
amplifiers, relays and
d.c. supply. SCPD 1971.
Interconnection Unit providing
hear facilities, or alte natively
system. Includes necessary
a loudspeaker. Powered from 24V
Programme Effects Generator Cassette Erasure Unit used to
erase the tape cassette in EP4/4. Unsuitable for any
other purpose. DD 1960. DD Spec 1.63. OBSOLESCENT.
Jig Unit used during assembly of Cinch connectors to the
mother beard of MA2M/50l and MA2M/502 to ensure that the
edge connectors are mounted in line. A = destination card
side of all mother boards; B = source side card of
MA2M/50l; C source card side of MA2M/502; D = video
mixers EP5/5l2, EP5/5l3, EP5/5l4. DD 1968. OBSOLESCENT.
Monitoring Tone Distribution Unit used in EP9L/l to select