23 -

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.

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 Superseded by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.