CHI
CHl/U, UA
CHl/13A-F
CHl/14A-D
CHI/IS
CHl/16A-F
CHl/ l7A, l7B
CHl/18F
CHl/19
CHl/20
CHl/2l
CHl/21A
CHl/22-24
CHl/25
CHl/26A-D
CHl/27,27A
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Plug-in chassis for units mounting on PN3/17. CHl/ll is
51mm x 121mm x 305mm and CH1/llA is l02mm x l2lmm x 305mm.
Superseded
by
CHl/12.
DD 1959.
DD Spec 8.42.
OBSOLESCENT.
Accommodates 2 to 12 type CHl/12 chassis for use in
portable equipment. Has rear connection panel. DD 1960.
DD Spec 8.59. DDTM 8.109. OBSOLESCENT.
Accommodates 3, 4, 5 or 6 type CHl/12 chassis for complex
units to be mounted on PN3/2l. DD 1960. WITHDRAWN.
Similar in construction to CHI/7 but larger and used where
a plug larger than 10 way is required. DD 1961.
OBSOLESCENT.
Accommodates 2 to 12 type CHl/12 chassis for use in
portable equipment. Has front connection panel. DD 1961.
WITHDRAWN .
Chassis for transistor units. CHl/17A is for amplifiers
and CHl/17B is for power units. DD 1961. WITHDRAWN.
CHl/18E with rear slots for 15 way Painton connector and
32 way Amphenol Blue connector. Used for AM4/9.
SCPD 1970. OBSOLESCENT.
Chassis for transistor amplifiers. Similar in style to
the larger CHl/18A. Plugs into PN3/25 which accommodates
16 CHl/19. 25mm x 95mm x 108mm. Gl. DD 1961.
DD Spec 3.315. OBSOLESCENT.
Used for AMl/4. Similar to CHl/18 and CH1/19 but designed
for mounting in a studio desk. 38mm x l78mm x 108mm.
DD 1962. OBSOLESCENT.
Hinged flush mounting for accommodating relays mounted on
sub-panels of different widths. 483mm x l78mm x l78mm.
DD 1962. DD Spec 3.327. OBSOLESCENT.
As CHl/2l but drilled for
DD Spec 3.327. OBSOLESCENT.
strips.
DD 1963.
relay
Chassis used in desks for mounting components, relays,
keys etc. DD 1963. OBSOLESCENT.
Similar to CHl/18D
units constructed on
First used TE2/l.
PN3/23. DD 1963. DD
but modified to take three plug-in
CHl/19 (e.g. AM9/5 and ME12/5).
Intended for permanent fixing to
Spec 3.358. OBSOLESCENT.
Similar to CHl/12A-D but with hinged mounting to take an
additional printed board. DD 1963/70. OBSOLESCENT.
Used on radio frequency equipment designed to plug into
PN3/23. Similar in size to CH1/12A. CHl/27A is similar
but with provision for fitting 15 way in-line plug for use
on UHF translator equipment. DD 1969. WITHDRAWN.

70