received by line from UNl/522 into a suitable form for
driving a pulse generator. CHl/12A. Input: 0 to -20dB
into 600~ balance and unearthed at 20 tl Kc/s. Output: IV
p-p from 75~ into 75~ at 20 tl Kc/s. Fed from PSI/I.
DD Spec 8.121. DDHB 8.160. OBSOLESCENT.
Notch Amplifier. Three zero gain chains, RGB, with plug
in boards providing notches of variable depth and width
tuned to colour sub-carrier frequency. CHl/12C. Mains
operated. Weight: 41b. Transistors: 6 AZFll, 3 2N706A, 2
OC84, OS28. DD 1963. DD Spec 8.111. OBSOLESCENT.
Cut/Fade Amplifier used in MXl/503. CHl/12A, Pegs 5, 13.
Includes NEl/5l7. DD 1963. DD Spec 8.165. DDHB 8.161.
EDI l0035(1)MAR72. AeO. OBSOLESCENT.
Sync Pulse Amplifier used in PA18/508 to
output of mixed sync pulse waveforms
UN9/5l6. CHl/12A. Pegs 3, 13. DD 1963.
provide a 2V
into 75~ from
DD Spec 8.145.
Mixing Amplifier used in MXl/503. Mains operated.
CHl/12A, pegs 5, 11. Includes 2 NEl/5l8. DD 1963.
DD Spec 8.163.
Pulse Matrix Input Amplifier. 7 are used with PA9/503,
each mounting on PA17/50S. Z in: 10~. Z out: l5~. Gain:
OdB for 2V input signals or 6dB for IV input signals.
l27mm x 105mm x 19mm. Transistors: 3 ASZ2l, 2Gl03.
DD 1963. DD Spec 8.106. ACO. OBSOLESCENT.
in: 1.8k~. Z
Output Amplifier. 12 are used on PA9/504, Z
out: 75~. l52mm x 69mm x 28mm. Transistors:
DD Spec 8.103.
Pulse Matrix Output Amplifier. 12 are used with PA9/S03
to handle any of the four standard pulse signals at 2V
level with 2dB overload margin. Z in: 1.8~. Z out: 75~.
152mm x 60mm x 29mm. Transistors: 4 ASZ2l, 2GIIO.
DD 1963. DD Spec 8.107. ACO. OBSOLESCENT.
Video Matrix Input Amplifier. 26 are used on PA9/504,
each mounted on PA17/S04. Z in: 8k~. Z out: 15~. Gain:
OdB. 127mm x 10Smm x 19mm. Transistors: 3 2N706A, 2N697.
DD 1963. DD Spec 8.102. ACO. OBSOLESCENT.
Equaliser Amplifier for correcting aperture losses on 405
and 625 line systems. Gain is -lSdB at low frequencies
and variable from -15dB to OdB at 5 Mc/s or 7.7 Mc/s.
DD Spec 7.8.
Cut/Fade Amplifiers. Part of MXl/502A. Consists of two
identical cut/fade amplifier chains each of unity gain
with 16 switchable inputs and 2 outputs, one of which can