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CHI
CHl/28
Copper chassis for radio frequency
dissipating up to 30 watts. Similar in
for plugging into PN3/23. Gl. DD 1963.
output units
size to CHl/12A
OBSOLESCENT.
CHl/29
Hinged relay mounting for 25 type 3000 relays. Flush
mounting with facilities for rear plug and socket
interconnections. Supersedes CHl/lO and CHl/2l for most
purposes. DD 1964. OBSOLESCENT.
CHl/30
Modified desk panel framework No. 240 fitted with a
rear
panel
for
interconnections
etc.
The rear
coincides with the two lower panel spaces only.
used DK2/ll. DD 1964. DD Spec 3.403. OBSOLETE.
hinged
panel
Firs t
CHl/3l
Similar to CHl/30 but rear
lower panel spaces. First
DD Spec 3.403. OBSOLETE.
panel coincides with three
used DK2/ll. DD 1964.
CHl/32
Blank desk panel No. 231
for terminations. Depth
position on a CT/49
OBSOLESCENT.
fitted with a hinged rear panel
is suitable for mounting in any
or
similar
cabinet.
DD 1964.
CHl/33
Similar to
units of
CS2/llA.
PN3/23 but
CHl/12A or
Gl. DD 1965.
of half width, to accommodate 4
equivalent
sized
chassis.
Fits
OBSOLESCENT.
CHl/34
Chassis for units mounted on PN3/43 normally to perform
switching
logic
functions.
DD 1965.
DDHB 7.105.
WITHDRAWN .
CHl/35
Modular Chassis used for assemblies of sub-units to form
plug-in modular desk panels for Type D studio equipment.
406mm x 54mm x l78mm deep. Suffixes indicate drilling,
additional metal details, etc. required for particular
desk panels. DD 1966. DD Spec 3.433. OBSOLESCENT.
CHl/36
Relay Chassis for relays normally driven by a circuit
built on CHl/34. Mounts on PN3/43. DD 1966. WITHDRAWN.
CHl/37A-D
Chassis used on mixer desks to house ancillary units and
miscellaneous controls required on desks fitted with
PA8/261A mixer modules. Height is l78mm nominal, and
nominal widths are multiples of the width of CHl/35: A =
57mm; B = l14mm;
C
l71mm;
D = 17lmm with two handles
instead of 1 fitted. DD 1966. DD Spec 3.444. DDTM 3.96.
OBSOLESCENT.
CHl/38
Similar in size to CHl/12B with provision for mounting two
fixed and two hinged printed boards with either front or
rear hinging. DD 1966. DD Spec 4.30. OBSOLESCENT.
CHl/37E,37F
Similar to CHl/37A-D.
Widths
are
E
=
229mm; F
=
286mm.
 
DD 1968.
OBSOLESCENT.
 
 
 
 
 
 
 
 
 
CH1/37G
Similar
to CHl/37A but for mounting
two
32
way
 
McMurdo
 
plugs
type
RP32
in
place
of
16
way.
 
DD 1969.
 
OBSOLESCENT.
 
 
 
 
 
 
 
 
 
 

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