UN1/54
UNl/55
UNlM/56
UN1/57
UNl/58
UNl/59
UN1M/60
UNl/6l
UN1/62
UN1/63
UN1/64
UN1/65
UNlM/65A
UNlN/65B
UNlM/65C
UNlM/65D
343 -
UNl
Recoded PA5M/2. DD 1965.
Relay Unit used in EPl/4. Operated from C02/3 to give
clock pulses of 0.5, 1 second and 0.5, 1 minute pulses for
automatic switching equipment. DD 1965. WITHDRAWN.
IF Unit used
with AMI4/2A.
as first IF Amplifier in RC5/4A.
DD 1965. OBSOLESCENT.
CHl/27,
Front End Unit used in
DD 1965. DD Spec 5.106.
RC5M/5. CHl/27,
OBSOLESCENT.
1,
2.
pegs
Telecine Sepmag Relay
in EP6/50l. DD 1965.
OBSOLESCENT.
and Metering Unit. CHl/18C.
DD Spec 1.36. DDHB 1.40.
Used
ACO.
Telecine Commag Relay and
in
EP6/50l.
DD 1965.
OBSOLESCENT.
Metering Unit. CHl/18C.
DD Spec 1.37. DDHB 1.41.
Used
ACO.
Voice Frequency Switching Unit. Includes 2 OS2/26, timing
circuit, key and indicator lights. Associated with
AMl/13, UN20/l. CHl/18C. First used Redmoss. DD 1965.
WITHDRAWN.
Quadrature Unit used to provide
from a single input with 90
them. CHl/12A, pegs 1, 33.
ACO. OBSOLESCENT.
2 programme signal outputs
phase difference between
DD 1965. DD Spec 5.115.
Decoder Unit used
UN20/4. CHl/18C.
in PAlM/51 to decode d.c. signals from
DD 1965/66. WITHDRAWN.
Four-wire Termination Unit used in PAlM/51. Similar to
FWTR/2A but in CHl/18E. DD 1965/66. WITHDRAWN.
Data Signal Line Bridging Unit used in PAlM/51. Comprises
solid state switch and line bridging circuit in CHl/18C.
DD 1965/66. WITHDRAWN.
Tone Source Line Bridging Unit used in PAlM/51.
082/26, solid state pulsating switch and line
circuit in CHl/18C. DD 1965/66. WITHDRAWN.
Includes
bridging
As UNlM/65
600St output.
but with output transformer changed to
DD 1965/66. WITHDRAWN.
give
As UNlM/65 but operating at 2888Hz and output transformer
changed. Used on Leeds-Holme Moss switching system. DD
1965/66. WITHDRAWN.
As UNlM/65 but
Manchester-Newcastle
WITHDRAWN .
operating at
indicating
3045Hz.
system.
Used on
DD 1965/66.
As UNlM/65 but with signalling tone changed to 2700Hz.
Used on PA6M/58. DD 1965/66. WITHDRAWN.

43