UN3/521. DD 1968. DD Spec 9.113. EDI 10011JLY69. ACO.
MP1 MECHANICAL MISCELLANEOUS PARTS
Precision Slide Mounting Equipment. Transportable
mechanical equipment which enables 35mm film to be aligned
accurately relatively to a standard slide holder prior to
mounting. An auxiliary jig is provided to enable mounted
slides to be checked. The film is positioned the correct
way round in a light beam and a X5 image projected onto a
rear projection screen for convenient viewing via a series
of surface silvered mirrors. The equipment is constructed
on a basic casting which holds the optical components
firmly in their correct location. Weight approximately
l2.5kg. DD 1977. CANCELLED 1977.
MX1 MISCELLANEOUS MIXERS
10.7Mc/s Mixer and Limiter used in UN1/33 with
transistorised FM drive equipment. Provides 10.7Mc/s
signal when connected to MD3/1A (2.6Mc/s) and OS2/18A
(13.8Mc/s). In copper box 76mm x 102mm x 51mm. DD 1963.
DD Spec 5.86. ACO. OBSOLETE.
Output Mixer, 10.7Mc/s used in UN1/39, BX1/4.
Second Mixer Unit used in UN1/40. BX1/4. DD 1963. ACO.
Programme and Tone Mixer used in PAlM/56. Fed with
programme from AM7/2. Operation of a push button inserts
a filter to remove 167.9Hz and l86.2Hz from the programme
and feeds in tones of l67.9Hz and 186.2Hz from AM1/21.
CH1/18C, pegs 12, 40. DD 1967. WITHDRAWN.
Microphone and Telephone Outputs used in PA1/60 to mix
telephone bandwidth output from AMl/6 with full bandwidth
microphone output. CH1/18C, pegs 17, 35. DD 1968.
DD Spec 2.276. ACO. OBSOLESCENT.
10kHz Tone Mixer used in MN1L/6 to provide a 10kHz tone
from the reference 100kHz tone and extract the pilot tone
from the programme material. DD 1968. WITHDRAWN.
Stereo and Group Mixer used in EP5/11.
and switching circuits for group and
DD 1968. ACO. WITHDRAWN.