CO129-390 - Acting Governor Claud Severn - 1912 [5-6] — Page 248

CO129 Colonial Office Hong Kong Records 理藩院香港檔案 All

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P.C.E6233 / 12102

243

Reference No. 13668

Marconi's Wireless Telegraph Company, Limited.

General Description of Thirty

K.W. Land Station

Proposed for Erection in

HONG KONG.

GENERAL.

The T pe of Station described below is designed to afford regular communication during the hours of daylight over a range of

950 nautical miles when working across open water with a station

similarly equipped with regard to height of Aerial and power and

efficiency of the Plant employed, The Range atated above would be considerably increased during the night hours and would amount

under favourable conditions to as much as three times the value

siven.

In addition to the Main Installation of the 30 KW. Size, a

Bubsidiary Installation for transmitting on the shorter wave lengths

would be supplied employing & separate fransmitting Aerial.

The Main Installation is designed to transmit on a range of

wave lengths between the limits of 2,300 and 4,000 metres, and the

Subsidiary Installation on wave length of 300 and 600 metree. The Receiving Apparatus is calibrated for the reception of all wave

lengths between the limits of 100 and 4,400 metres.

The normal and most efficient wave length for the Main Instal-

lation, and that for which the larger Transmitting Aerial is designed

is 3,000 metrce, and it is for this wave length that the normal

langs given above is guaranteed.

-1-

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