EPl
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EPl MISCELLANEOUS EQUIPMENT
EPl/l
Equipment A.C. Test Trolley used in Broadcasting House
Extension. Trolley similar to RD4A/2 equipped with ATP/l,
GPM/3, AT/30, TS/lO, ATM/l. DD 1961. WITHDRAWN.
EPl/2
Aerial Distribution Equipment
Tatsfield. Includes PAl/45,
DD 1965. OBSOLESCENT.
used at Caversham and
PA1/46, AM14/6, PS3/29.
EPl/3
Monitoring Equipment
drive equipments at
PN3/23 with 6 MN4/l,
OBSOLESCENT.
for three normal and three reserve
a triple VHF transmitter station.
2 PS2/l3H. DD 1965. DD Spec 5.98.
EPl/4
Master Clock Equipment used at External Services
transmitter sites where CTS time signals are not reliably
available for control of a master pendulum clock.
Operates from 50V station battery. PN3/23 with OS2/25,
C02/3, C02/4, UNl/55, PS2/42. First used Ascension
Island. DD 1965/68. WITHDRAWN.
EPlM/5
Programme Effects Generator Equipment using pre-loaded
tape cassettes. CTl/l with 4 RP4/2 and associated units.
Superseded by EPlM/8. DD 1965/68. WITHDRAWN.
EP lM/ 6
Programme Effects Equipment used as auxiliary to EPlM/5.
CTl/2 with 2 RP4/2. Superseded by EPlM/9. DD 1965/68.
WITHDRAWN.
EPl/7
Type D Sound Control Equipment
sound control desks employing
constructed on CHl/35 and CHl/37.
used in the assembly of
modular plug-in units
DD 1965/68. WITHDRAWN.
EPlM/8
Programme Effects Equipment for reproduction of "effects"
by means of pre-loaded tape cassettes. Similar to and
superseding EPlM/5. CTl/3 with 4 RP4/4, PA6/57 and as
required UN3/20A or UN3/20B, PS2/24, UNl/ll2, RP4A/3.
DD 1965/6S. DD Spec 1.46. WITHDRAWN.
EPlM/9
Programme Effects Equipment used as auxiliary to EPlM/S.
Similar to and superseding EPlM/6. CTl/4 with 2 RP4/2.
DD 1965/6S. DD Spec 1.46. WITHDRAWN.
EPl/IO
Remote Switching Equipment capable of a maximum of 35
different switching functions. First used Bristol-London,
then modified for Glasgow-Kirk O'Shotts. Sending end:
483mm bay with PN3/l8, PA1/30, PA17/l02-l07. Receiving
end: 4S3mm bay with AMS/l, PA17/l05, PA17/l0S, PA6/27,
PAl/22, PAl/33, FLl/S, FLl/12. DD 1969. OBSOLESCENT.
EPlM/ll
Digital Switching Sending Equipment associated with
EPlM/12 for line selection etc. at both Broadcasting House
and Wrotham over either the control line or the B.P.
microwave link. Supersedes the present phantom switching
system. Two PN3/23 with sub-units. DD 1969. WITHDRAWN.
EPlM/12
Digital Switching Receiving Equipment associated with

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