Wireless station "Australphone" Z1/ZAA0520

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General Description

The "Australphone" is a commercial (AWA) transceiver in a thin military guise. It was acquired by the Australian Army for use as a general purpose radio for survey parties, civil emergencies and water transport.

The sets were produced in the mid-fifties and were regarded as obsolescent by the Army in 1966.

Technical Data

The transmitter covered 1.6 -10 m/cs in 3 crystal controlled channels.

The transmitter is capable of cw and am transmission. (mcw also on receive.)

The receiver is continuously tuneable over the frequency range of 540 kcs to 16 m/cs.

Specifications are as follows:
    Band A 1.6-3.0 mc/s Band B 3.0-5.4 mc/s Band C 5.0-10.0 mc/s.
    Crystal control - Frequency selected from front panel.
    AWA Type D crystals - similar to CRl8/U, HC-6U.
    Output: 8 watts at 2.0 mc/s, 5 watts at 10.0 mc/s.
    Output Impedance:17-50 ohms OR 600 ohms - both unbalanced.
    Emission Types: CW - manual, AM - via PTT function.

    Band A 550-1600 kc/s Band B 1.6-5.0 mc/s Band C 5.0-16.0 mc/s
    Sensitivity: 3 microvolts, mod 30 % at l000c/s gives 50mw output.
    Selectivity: Not more than 10db at 10 kc/s, not less than 60db at 40kc/s.
    Image Ratio: 200:1 at 4.9 mc/s 50:1 at l5 mc/s.
    Power Output: Appx. 2 watts at 10% distortion. (3 ohm speaker)

Power Supply:12 volts negative earth. Rx 3A, Tx 7A dc.

Overall Dimensions: Height l3in, Width 2l.5in, Depth l4.5in, Weight 70lbs.

The military version of the Australphone is fitted with a protective guard at the front.

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© Ian O'Toole, 2009. Page created: 28/04/03 Last updated: 4/12/2009