Australian Army Museum of Western Australia > Records

World War 2, Western Australia, Rottnest island , Coast Artillery Instrumentation, Radio Direction Finder Towers

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Subcollections

Coast Artillery Fire Control - Target and Projectile Coincidence

Overview

Of the four visual Fortress Observation Posts, three were selected to have Radio Direction Finding equipment added to the site. These were Bare Hill (“Bare”), Cape Vlamingh (“Flame”) and Tree Hill (“Hill”). There were three components: a Radio Direction Finding Hut; a Coast Artillery No 1 Mk2 (Aust) Radio Direction Finder and a Radio Direction Finding Tower.
To obtain the required aerial height at each site, it was necessary to erect a 180 foot tower. Each tower was a self supporting steel structure on a base 30 feet square. A platform 12 feet square around the top provided access for maintenance of the Direction Finding unit. A ladder with safety cage and a hand operated lift ran up the side of the tower.

Details

Registration number

cwa-org-32-54-763

Inscriptions and markings

The Direction Finder aerial at Cape Vlamingh rotated through and arc of 360 degrees , while thiose at Bare Hill and Tree Hill covered an arc of 200 degrees.

Contextual Information

This entry is based on research, documentation and technical drawings prepared by John Mercer during many years as a leading member of the Rottnest Island Military Restoration Committee and the Defence Heritage Interpretation Plan Group.

Australian Army Museum of Western Australia

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