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AM6/S
Programme Limiting Amplifier with zero gain and 20dB
range. Includes variable gain recovery, simple
noise-gate, relay to guard automatic monitor systems,
voiceover unit, gain reduction meter, 20dB attenuator for
insertion in input or output. CHl/27B. DD 1969.
DD Spec 3.516. DDTM 3.105(70). EDI. OBSOLESCENT.
AM6/l0
Audio Limiting Amplifier used in BA1/4 in conjunction with
FL4/49 and NE4/1 either singley or as ganged stereo pairs.
Printed
board
with 25 way
ISEP
plug.
DD 1971.
EDI.
OBSOLESCENT.
AM6/ll
Limiting Amplifier, comprising two channels ganged as
stereo pair. When used with a Delay Unit UN14/9, forms
stereo limiter with same facilities as AM6/S. CHl/37B.
DD 1972.
DDMI 3.55S.
DDHB 3.130.
EDI 10157(P)NOV72.
ACO. OBSOLESCENT.
AM6/l2
Limiting and Pre-emphasis Amplifier, used in CD2M/50S.
Input signals are pre-emphasised and limited so that
output signal level does not exceed +SdB. Printed circuit
board lllmm x 225mm with 33 way ISEP connector. Indexing
positions 3, 25. 31. RD 1972. OBSOLESCENT.
AM6/l5
Limiting and Emphasis Amplifier used in BA1/4 and EPS/4.
Requires separate delay line. CHl/64J. Superseded by
AM6/23.
DD 1974.
DDMI6.267(75).
DDTM 6.144(77).
OBSOLESCENT.
AM7 LINE AMPLIFIERS
AM7/l
Transistor Amplifier used on P.O. premises. Gain: 45dB.
DD 1955. DDHB 2.83. OBSOLESCENT.
AM7/2
Line Sending Transistor Amplifier superseding C/9. Gain:
10dB. Z in: high. Z out: 600~. CHl/lSA, Pegs 5, 30.
DD 1961. DD Spec 3.3lS. ACO. OBSOLESCENT.
AM7/3
Internal Sending Amplifier used as output amplifier for
studio desks. CHl/lSC. Gain: 25dB. Z in: high. Z out:
55~. DD 1961. DD Spec 3.313. ACO. OBSOLESCENT.
AM7/4
Line Receiving Amplifier superseding GPA/4A. Gain:
Adjustable from 20dB to 60dB in 1dB steps. Z in: 600~. Z
out:
55~.
CHl/lSC.
DD 1961.
DD Spec 3.319.
ACO.
OBSOLESCENT.
AM7/4A
Similar to
where fine
OBSOLESCENT.
AM7/4
gdn
but less variable attenuator
control is not required.
for use
DD 1961.
AM7/4C
Similar to AM7/4A but with protection from interference by
RF fields. Includes FLl/23. DD 1967. OBSOLESCENT.

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