AM5
AMS/519
AM5/525
AM6/1
AM6/2
AM6/2A
AM6/3
AM6/3A
AM6/3B
AM6/4, 5
AM6/6
AM6/7
- 22
44. DD 1969. DD Spec 9.122, 9.124(70). OBSOLESCENT.
Video Amplifier, 40dB, used in RC5M/502.
outputs into 75~. CHl/12A. DD 1969.
OBSOLESCENT.
Procides 2 IV
DD Spec 6.156.
As AMS/5l3, but constructed
DDMI 9.206.
CH1/65A.
DD 1964.
on
AM6 LIMITING AMPLIFIERS
Limiting Amplifier used
CH1/l8C. DD 1963. ACO.
in AMl/6. Gain:
OBSOLESCENT.
42dB to 64dB.
Limiting
DD 1963.
and AGC Amplifier used
OBSOLESCENT.
in
UNl/4l.
BXl/4.
As AM6/2
DD 1966.
but with
WITHDRAWN .
slightly
modified
input
circuit.
Peak Programme Limiter for use in a 6000hm circuit of OdB
programme level. Voltage gain: OdB. Z in: high. Z out:
600~. Includes top tilt in side chain for use with FM
transmitters, and a relay for guarding automatic
monitoring apparatus. Mains operated. Comprises Unit 1
in CHl/18E and Unit 2 in CHl/18C, Pegs 5, 30 and 4, 7
respectively.
DD 1963.
DD Spec 3.392.
DDHB 3.78.
DDHB 3.92. ACO. OBSOLETE.
Modified AM6/3 to include facility for use as a
compressor. Superseded AM6/3. DD 1967. DD Spec 3.455.
EDI. OBSOLESCENT.
As AM6/3A, but
semiconductors.
OBSOLESCENT.
redesigned
DD 1971.
to use modern types of
DD Spec 3.455.
EDI.
Recoded AMl/14 and
OBSOLESCENT.
AMl/15
respectively.
DD 1965.
Constant Level AF Amplifier used in the measurement of
phase difference between stereophonic programme
distribution lines. Two amplifiers, each delivering zero
level output for inputs between zero-level and -20dB.
Mains operated. CHl/18C, Pegs 11, 31. DD 1966.
DD Spec 2.259. OBSOLESCENT.
Programme Limiting Amplifier for transmitters and
unattended studios and as a compressor for "pop" music
types of programme. Includes noise gate. Voiceover
input, top tilt for use at FM transmitters, and relay to
guard automatic monitoring apparatus. CHl/26B, Pegs 23,
39. DD 1968. DD Spec 3.471. DDHB 3.94. EDI. ACO.
OBSOLESCENT.

22