phase difference between two
signals. PN3/23 with sub-units.
DD 1970. WITHDRAWN .
MElO Sub Group not available for new designs DD 1977.
MEll PHOTOELECTRIC METER
used to measure light output from a
e.g., UN12/50l and PA2l/50l.
MEll Sub Group not available for new designs DD 1977.
ME12 PEAK PROGRAMME MEASURING EQUIPMENT
Used on UN3/50l. Transistors:
DD Spec 3.173. WITHDRAWN.
Used in Mobile Control Rooms with AM9/l, AM9/2 or AM4/l.
Transistors: 6 TS3. DD 1958. WITHDRAWN.
Used at satellite transmitting stations. CH1/7B chassis.
Transistors: 2 GET104, 2 GET105, 4 OC200. DD 1960.
DD Spec 3.173. DDHB 3.55. WITHDRAWN.
Small and simple peak programme meter amplifier/rectifier
used in conjunction with external meter where precise
characteristics of standard PPM are not required. CH1/19
chassis for mounting on PN3/25. DD 1961. DD Spec 3.312.
Has similar characteristic to ME12/5 but is designed to
operate from l2V for embodiment in portable tape
recorders. CH1/19. DD 1965. OBSOLESCENT.
Auxiliary Programme Level Meter electrically similar to
ME12/5 but with small peak programme meter and 23 way
selector switch and a push-button giving 20dB extra
sensitivity. Includes AM20/2. First used Broadcasting
House Continuity. CH1/37G. DD 1969. DD Spec 3.517.