- 71

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WITHDRAWN .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 WITHDRAWN.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;

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.