- 187 -
MCl
14
Cable clamping collet for STC type 4069 jack when used as
adaptor to fit microphone to stand. DD 1965.
OBSOLESCENT.
XC-lB/IS
Thread adaptor for Beyer M160 Clamp (MClB/16) to enable
M160 mcirophone to be used with standard BBC adaptors and
stands. DD 1965. OBSOLESCENT.
LCb/16
Beyer Microphone Clamp of Beyer design for holding Beyer
M160 microphone horizontally or at an angle. Used with
MC1B/15 for fitting to BBC adaptors and stands. DD 1965.
OBSOLESCENT.
HCIB/17
Flexible Arm for Beyer M160 Microphone. Beyer design
(type SH15/400N). Screws into MC1B/3. Internally wired
and has a 90mm cable tail terminated in a Cannon
EP-B-12-lC plug. DD 1965. OBSOLESCENT.
AClB/18
Adaptor for fitting microphones with 3 pin Tuchel
connector to Reslo microphone stems. DD 1966. OBSOLETE.
MCI Sub Group not available for new designs DD 1977.
==========================================================================
MD1 MISCELLANEOUS MODULATORS
10.1/1
Used in PA1/2B and PAl/29.
OBSOLESCENT.
DD 1960.
DD Spec 2.172.
Balanced Modulator used in
circuit board with plug.
DDHB 2.184. OBSOLESCENT.
PASM/4, PASM/S. Printed
DD 1960. DD Spec 2.034.
501
Modulator
Unit
used
in
GEl/517.
Input from C02/507 at
1/77th of stable oscillator frequency and from C02/S06
produce two sinusoidal outputs at twice line frequency for
feeding C02/50B and associated waveform generator.
Includes CH1/l2A and UNl/53S. DD 1963. ACO. WITHDRAWN.
502
Wide
Band
Sound
and
Vision
Modulator.
Fully
transistorised.
Supersedes MD2/S02.
Suitable for colour
signals.
Plug
in
units
give
either 40S line positive
modulation vision and amplitude modulated sound, or 625
line negative modulation vision and frequency modulated
sound. 40S line system includes PN3/23 with PN3A/lO,
AMlB/508, lUV.3/50lA, GE2/502, MDl/503A (vision), MDl/S03A
(sound), UNl/546, PS2/33, FL4/l4. 625 line system is as
fOl 405 line system with MD1/S03B (FM) in place of
MDl/S03A (sound), plug PN3/23 with PSl/IO, MD3/S01,
UN15!SOl,
C02/510.
DD 1964.
DD Spec 4.17.
ACO.
WITHDRAWN.
~03A
Modulator
used
in MDl/S02 for
amplitude
modulation
of
vision and sound. Includes appropriate crystal oscillator

87