RAN Station 302 Indicator Loop and Controlled Mining Station, Newcastle, New South Wales

RAN STATION 302
INDICATOR LOOP AND CONTROLLED MINING STATION
NEWCASTLE, NSW

A controlled minefield of 12 mines was also installed by HMAS Gippsland by 20 June 1942 and operational on 26 June 1942. On 19 January 1943, the No. 4 Group of mines detonated accidentally.

The small concrete bunkers for the Power Hut and Observation Post were installed by the 18 June 1942 on the northern side of the river at Stockton near the end of Pitt Street.

A three legged Indicator Loop was installed in 1942 as a Guard Loop from Nobby's Head back towards Stockton generally as shown on the picture below. The Indicator Loop cable was laid by HMAS Gippsland on 17 August 1942.

The Indicator Loop detected a change in magnetic field caused by a steel hull passing above the loop which generated a small voltage which was detected by a galvanometer in the Control Hut.

RAN Station 302 Indicator Loop and Controlled Mining Station was closed in December 1944.