1914: The Australasian Wireless System

The Argus (Melbourne), 27 January 1914, p 5

THE AUSTRALASIAN WIRELESS SYSTEM – EXTENDING ZONES OF OPERATION.

Map of the Australasian wireless system in 1914

Click on map for full size view

The accompanying map serves to show not only the scope of the wireless system of Australasia at the present date, but it also marks the rapid growth of wireless stations in Australia and New Zealand within the last two years.

In November 1911, the only two wireless stations in Australasia were those at Pennant Hills (Sydney) and Perth, both of which are on the Telefunken system. Today there are 17 stations actually working – and doing most valuable work, too – and another high-power station is projected at Darwin. In noting the scope of the accompanying map it should he observed that the Darwin station is included in the zones indicated.

In the map the dotted zone, the inner-most o£ the zones, shows the mean day range covered by the commercial low-power stations of Australia. The effective radius of the zone is 500 miles. The normal night range of the same low-power stations is set down at about 1,500. As a rule, the normal night range of a wireless station may be computed as about three times the day range.

The shaded portion shown in the map indicates the mean day zone covered by the Commonwealth high-power stations. The range indicated is 1,000 miles, and for the night range 2,500 miles is regularly operated over.

The dotted line, encircling New Zealand to the east, and the Macquaries to the south, marks the normal day zone of the new high-power stations at Awanui (Auckland) and Awarua (Bluff), New Zealand. Both are replicas of the Pennant Hills apparatus. The effective range of the Awanui new station is stated to be about 2,000 miles, but it has worked over much greater distances during the elaborate tests to which it has been submitted. A stipulation was made that communication with Sydney and the Awarua station should be possible from Awanui in the day time, and this condition has been fully satisfied.

It should be mentioned that, with the exception of the Perth and Sydney stations, the Commonwealth system is established throughout Australia. It can be seen that with the effective night ranges of the high-power stations added to the outer circle indicated on the map, and the aid of vessels at sea equipped with wireless apparatus, the Australasian chain of wireless activity is now in a forward condition.

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