CO129-547-1 Wireless telegraph and telephone services 16-1-1934 - 26-1-1934 — Page 24

G. F. 22

Inside Sheet

HONG KONG

INDENT No:-

PAGE.:

1.

24

Item

Quantity.

Description of Articles.

Total.

No.

Rate.

£.

S.

Estimated Cost in England.

d.

Remarks or references to specifications or special notes (if any) on separate sheet.

1

3

2

1

INDENT FOR

ONE C.W./I. C. W. TELEGRAPH TRANSMITTERS TYPE S.W.B. 4B WITH ADDITIONAL EQUIPMENT REQUIRED FOR TELEPHONY

AND

EQUIPMENT FOR DIRECT RECTIFI- CATION FROM A THREE PHASE SUPPLY BUT WITH DIRECT CURRENT FILAMENT LIGHTING FOR HONGKONG

With provision for transmission on four spot waves in harmonic relation selected between: 9.5-130 metres (31,600-2308 kc/s.)

Transmitter Rating:

To Aerial Rating

C.W. Telegraphy

-

14 metres.] 24 metres & above

2.0 K. W.

1.2 K. W.

Telephony (70%

modulation)

1.0 K.W. (carrier)

1.4 K.W. (carrier)

UNIFORM or DOUBLET TYPE OMNIDIRECTIONAL AERIALS for i three predetermined wavelengths. (64 M.not required). The aerials to be complete with all necessary detail fittings and each to be complete with a No.2 type concentric tube feeder with aerial coupling box, feeder changeover link box and all accesso ri es, or aerial feeder line equipment. (See accompany- ing letter).

RECEIVING PLANT

MAIN RECTIFIER UNIT, consisting of rigid angle framework with mounting for three M.R.7A valves, with filament transformer, and

Carried Forward......

Ref. No. S.04396/1964 P.C.33100/74124 (Modified).