- 341 -
~l
DD Spec 11.3 OBSOLESCENT.
UNl/28
Used in AT3/503. Light tight box containing photo-cells
and two festoon type bulbs. DD 1963. WITHDRAWN.
UNl/29
Line Amplifier and Power Supplier Unit used in OT2/3.
Includes metal carrying case with 4 AM7/5~ 2 PS2/9~ PSl/7.
DD 1963. DD Spec 3.379. TI.SX.5. OBSOLESCENT.
UNl/30
Communications Unit
communication section
studio
desk with metal
and a test oscillator
apparatus.
DD 1963.
OBSOLESCENT.
used as central linking and
of OT2/3. Styles as miniature
carrying case. Includes 2 AM9/5
as well as telephone and cueing
DD Spec 3.380.
TI.SX.5.
UNl/3l
Response Selection Amplifier Unit
Comprises metal carrying case with 6
DD Spec 3.381. TI.SX.5. OBSOLESCENT.
used in
AMl/4.
OT2/3.
DD 1963.
UNl/32
Carrier Fail Unit used in UNl/4l.
DD 1963. DD Spec 5.77. OBSOLESCENT.
Printed board.
UNl/33
A.F. Input and First R.F. Mixer. Part of EP7/4.
Comprises CHl/27 with variable A.F. attenuator~
switchable de-emphasis network and MXl/2. Replaced by
UNl/78 for multiplex stereo input signals. DD 1963.
DD Spec 5.84. OBSOLESCENT.
UNl/34
Frequency Modulator
Comprises CH1/12B
Replaced by UN22/l.
and Oven Unit used on EP7/4.
with commercial oven and MD3/lA.
DD 1963. DD Spec 5.88. OBSOLESCENT.
UN1/35
Variable
current
DD 1963.
Conductivity
controlled
WITHDRAWN.
Unit
lamp
used
and
in GEl/5l2. Employs
photo-conductive cell.
UNl/37
Input Timing
DD Spec 5.76.
Unit used in
OBSOLESCENT.
UNl/39.
BXl/4.
DD 1964.
UN1/38
Oven Control Unit used in EP7/5. Comprises two UNl/15A on
CHl/27 with mains transformer providing 6.5V 5C Iz supply.
DD 1964. DD Spec 5.81. ACO. OBSOLESCENT.
UNl/38A
Oven Control Unit used with VHF television translators.
Similar to UN1/38 but one UNl/15A is omitted. Used where
second oven does not require close control. DD 1965.
DD Spec 12.5. OBSOLESCENT.
UNl/38B
Used where neither oven requires close control. Both
UNl/15A are omitted and unit supplies only 6.3V a.c. to
ovens. CHl/12A. DD 1965. DD Spec 12.5. OBSOLESCENT.
UNl/39
Front End Unit used for VHF (Band 11) fixed frequency FM
rebroadcast receivers and translators. Includes CHl/27
with UN1/37~ MX1/3, OS2/20 each in BXl/4. Mounts on 54mm
width
of
PN3/23.
Input frequency
range:
87.5Mc/s
to
97.5Mc/s. Output frequency: 10.7Mc/s. Superseded by

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