CO129-547-1 Wireless telegraph and telephone services 16-1-1934 - 26-1-1934 — Page 8

G. F. 22

Inside Sheet

INDENT

Item

No.

Quantity.

HONG KONG

8

Estimated Cost in England.

Description of Articles.

Total,

Rate.

£。 3.

d.

Remarks or references to specifications or special notes (if any)

on separate sheet,

9 (Contd.)

10

1

11

d. Rectifier for Grid Bias

Supply, of the metal oxide type complete with all necessary amoo thing to deliver 150 m/a.at 22/33 volta D.C.

.e. Rectifier for Control Table

Supply, of the metal oxide type complete with all necessary smoothing to deliver 300 m/a. volta D. C.

NOTE:

at 22/33

For normal operation the batteries will be connected to float across the outputs of the above rectifier units, but the latter have a voltage range to trickle charge the respec- tive batteries. Supply voltage

200V. 50 cycles.

SWITCH, ironclad with fuses for Rectifier Supply from mains.

1 Supply CABLE & WIRING consisting of

12

1

set.

13

1

H

an adequate quantity of lead

covered cable with saddles and cleats etc. as required for connecting up the complete equipment.

RECOMMENDED SPARES FOR TELEPHONE

RECEIVING EQUIPMENT

SPARE VALVES for Combined Te le- phone Receiver and Terminal Equipment.

SPARES for Telephone Receiver and Terminal Equipment compris- ing:-

a. 12 Condensers as used on

Receiver.

:

Carried Forward......