World War 2, Western Australia, Radio, WS No 11 (Australian),1942
The WS No11 (Aust) was designed to replace the Australian 101 set in the Army. The set was produced by Amalgamated Wireless Australasia in 1942 and is an Australianised version of the UK No 11, using different valves and receiver IF frequency.
It is a combined receiver and transmitter, working over the frequency range of 4.2 - 7.5 mc/s. The circuits of the two units are so arranged that the main tuning control for the receiver is also the master oscillator for the transmitter, which makes netting easier. The set is equipped with 9 valves, three of which are common for transmitting and receiving.
Two different H.T. power supplies are used. The Low Power unit (LP) operates the receiver and transmitter, but for additional transmitter output, the HP unit may be switched in, effectively doubling the transmitted range. The power unit outputs are 210v for the LP unit and 345v for the HP unit. Primary power for the set was 12v dc, normally provided in service life by two 6v 75Ah accumulators. On receive 2.9A of current is drawn, while on transmit 3.3A is used on LP and 6.5A on HP.
Details
Details
These sets were popular with hams after the war but only covered the 40 metre band. Many sets were released after the war in original packing, having never been in service as they were replaced by the No 19 set which used AC valves and included close range VHF communication and an intercom for use in armoured fighting vehicles.
This radio is located in the Communications Gallery commissioned by the Australian Army Museum of Western Australia as part of the Centenary commemorations of the Royal Australian Corps of Signals. Communication devices used by the Australian Army also are presented in their operational context throughout the Museum.
Australian Army Museum of Western Australia
Australian Army Museum of Western Australia
Australian Army Museum of Western Australia
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