001
DMl/503
DM1/504
DM2/502
DM2/503
002/505
DM2/507
DM2/508
DM3/1
DM3/501
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NTSC Vector Demodu1ator used in UN20L/508A. Accepts an
NTSC chrominance signal sub carrier and produces X and Y
deflection signals. CH1/12A, pegs 14, 38. DD 1967.
DD Spec 8.251. ACO. OBSOLESCENT.
Amplitude and Phase Demodu1ator used in MN1M/507 to
demodulate the colour sub-carrier and give waveform
representation of differential phase and gain distortion.
CH1/12A. DD 1967. WITHDRAWN.
DM2 AMPLITUDE DEMODULATORS
Carrier Amplitude Demodulator used to recover the
composite television waveform from a 30MHz amplitude
modulated waveform. Associated with MD2/503 and ME4M/50l.
CH1/12A,
pegs
14,
19.
DD 1965.
DD Spec 7.65.
DDHB 7.109. ACO. OBSOLESCENT.
Vision Demodu1ator used in RC4M/503.
WITHDRAWN.
CH1/12A.
DD 1965.
Synchronous Amplitude Demodulator used in the Field Store
Standards Converter in place of a modified DM2/502 to give
improved demodulation on vestigial sideband signals as
used in the converter. CH1/12A. DD 1967. DD Spec 7.130.
OBSOLESCENT.
Amplitude Demodu1ator, 30MHz. From an input signal of
0.5V p-p of d.s.b., a.m., 30MHz carrier delivers a
demodulated video signal of lV into 75Q. First used
Research Department. Advanced Field Store Standards
Converter. CH1/l2A, pegs 45, 53. DD 1969. WITHDRAWN.
Amplitude Demodulator used in EPl4M/504 to demodulate the
output from AM2l/503. CH1/l2A. DD 1970. WITHDRAWN.
DM3 FREQUENCY DEMODULATORS
Frequency Demodu1ator, lMHz, for demodulating a frequency
modulated rMHz carrier received from a remote AM21/2 via a
link. Output is stereo multiplex waveform. Consists of
No.2 printed board of AM21/2. CHl/26A. DD 1968.
WITHDRAWN.
Sound Frequency Demodu1ator used in DMlM/50l and RC5M/50l
to demodulate
FM
sound.
Input
at
6MHz is supplied by
C02/529 or AM1/566. CH1/l2A, pegs 10, 39. DD 1967.
DDTM 6.86(70). OBSOLESCENT.

100