UNl
UNl/91
UN1/93,A,B
UNl/94
UNl/95
UNl/96
UN1/98
UNl/99
UNl/lOO
UNl/10l
UNl/102
UNl/102A
UNl/103
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Control and Indicate Unit used at Stagshaw to apply 50V
positive or negative to line to operate UN2l/2 at
Newcastle. Also received signals from Newcastle to
indicate state of Wrekenton transmitter. CHl/18C.
DD 1967. WITHDRAWN.
As UN1/38, UNl/38A, UNl/38B respectively
transformer for 3V d.c.
operation.
Used
CHl/27, CHl/12A respectively, pegs 13,
OBSOLESCENT.
but with mains
on PSlM/13B.
32. DD 1967.
Mono/Stereo Oven Unit used
EP7/7, EP7/7A. First used
UN22/l. CHl/12B. DD 1967.
with UN1/78
at Wrotham.
WITHDRAWN.
originally in
Superseded by
Flexible Module Extender Unit for use when testing modules
on Type D studio desks. Consists of a plug unit, 54mm x
406mm x 2l6mm deep, with 4 16 way and 2 24 way McMurdo
plugs connected by a 900mm cable to a socket unit, 54mm x
406mm x 75mm deep, with 4 16 way and 2 24 way McMurdo
sockets. DD 1967. DD Spec 3.464. OBSOLESCENT.
Cable Matching Unit, Band 11 for matching 75~ output
inpedance of FL6/8 to SO~ imput impedance of RCS/4A, EP7/5
etc. Consists of a coaxial connector comprising a coaxial
plug connected to a specified length of SO~ coaxial cable,
connected to a further length of 75~ coaxial cable
terminated by a coaxial socket. DD 1967. WITHDRAWN.
Scan Unit driven by UN3/l6 in PA2M/9 to scan 6 inputs and
feed
output
to
UN3/l6.
ISEP
printed
circuit
board.
DD 1967. DD Spec 2.333. ACO. OBSOLESCENT.
Error Signal Integrator Unit used in MN2M/7 to operate an
alarm or executive switching on fault detection, and
provide automatic reversal (resetting) 15 minutes after
the last incident of fault detection. Includes UN15/7.
CHl/12A, pegs 16, 26. DD 1967. DD Spec 5.152. ACO.
OBSOLETE.
Dummy Unit used to ensure availability of clean contacts
when cross-plugging PS2/37 units in PS2M/6E. CHl/12B.
DD 1967. CANCELLED.
Input and Gain Control Unit used in PAl/60.
input jacks and switched attenuators. CHl/18C.
DD Spec 2.277. ACO. OBSOLESCENT.
Comprises
DD 1968.
Intercom Desk Unit for office use. Wooden box holding
32lmm x 267mm key panel (36 keys) with cut-out for l40mm x
l02mm amplifier panel. DD 1968. WITHDRAWN.
As UNl/102 but less 12 select keys. DD 1968. WITHDRAWN.
Frequency Divider Unit used in MNlL/5 to derive 10kHz tone
from
a
100kHz crystal
oscillator.
CHI/18.
DD
1968.
WITHDRAWN.

46