Wireless patrol car which is a Lancia Trikappa Tourer. The 7-stage amplifier with the tuning condenser can be seen through the open door of the car. Police dog on the running board. Photograph appeared in Popular Radio Weekly, March 4, 1923. The transmitter aerial was strung between the front and rear mudguards and lenghened by the driver raising the pole in order to improve reception. The receiver aerial is tied to the underneath of the roof.police vehicles; lancia trikappa tourer; motor police branch; wireless patrol; transport

Wireless Patrol Daimler with driver Charles Murray, operator Fred Canning outside of car and Sen.Constable Fred (Pop) Downie in back seat, circa 1926-1927. Photos shows wireless transmitter and receiver on the floor. Taken outside the Working Mens's College, later RMIT in LaTrobe St.Caption: Daimler radio equipment 1920spolice vehicles; transport; motor police branch; daimler car; wireless patrol; wireless operator

Five 'Popular Radio Weekly Magazines. .1) Vol. 1, No. 1, 25 February 1925. (Purchasing a receiver, eliminating static, Morse Code, An Efficient one-valver, A Simple Crystal Circuit, Combining Valve and Crystle, the Alfred Hospital, Frank Tate on Radio. Images of Josie Melville, Alberto Zelmanm circuits) .2) Vo. 1, No. 14, 27 May 1925. (Purity amplifier, Popular Wireless, Oscillations, Marconi's Wireless Beam Transmitter, Resistance coupled Amplifiers, Condenser Losses) .3) Vol. 1, No. 2, 04 March 1925. (A Crystal Receiver, Medium Wave Four-Valver, The Harkness Circuit, A One-Valve Super, The Aerial Mast, The Police Patrol, C Batteries, A Two Crysal set, La Bela Lingvo, Plain Aerial. Images - Transmitting Aeroplace, A. Nicholson - Chief Commissioner of Police) .4) Vol. 1, No 15, 03 June 1925. (The Ham and Radiophone, A Good Circuit, How the Microphone Transmitter Works, A Reflex Circuit, A Millionaire's Radio Installation, Teh Deresnadyne, Crystal Detectors, Hints an Accumulators, 3LO, Selection Radio Parts) .5) Vol 1, No. 6, 01 April 1925. (The Renartz Tuner, A 600 foot aerial, Measuring your Receiver, Doctoring Your Set, Understanding What You Read, The Vernier Condenser, Radio and Railways, Who Can Build the Smallest Set.)radio, valve, electrical engineering, frank tate, alberto zelman

Also know as T.R 5043 in RAF and RAAF usage. Very widely used Very High Frequency Transmitter/Receiver operating in the 100 to 150 MHz range. This equipment is very heavy for the low power output (8 to 9 watts) weighing in at 22 kg and another 16 kg for the associated Dynamotor power supply. Physical size 2bx

This equipment was used to detect and analyse enemy radar transmissions. A piece of radio equipment very typical of the time, aluminium with circular glass display screen.

Battery operated radio which only operates when lid is open. There is a volume control and station selector. The inbuilt aerial is directional and the receiver should be oriented for maximum volume. This is a brown metallic radio with plastic strap.Operating instructions inside bottom cover (as described above). Front: "TASMA"tasma, radio, battery operated

Model 903 - Broadcast Receiver - past WW2 Tuner. Valves and tubes - GAN7, EBF35, GM5, 6x4 Principle: Super-Heterodyne ZF/IF 452KHz Wave Bands: Broadcast only (MW) Power: AC 220/240 Volt Loudspeakers: Permanent Magnetic Dynamic (PDyn) Loudspeaker (moving coil) Colour: RedBack: Internal Aerial Socket Model 903 Front: Left Dial - OFF VOLUME. Front: Right Dial - AK, MAAW, C SDB, LO, CO, G1, AR UZ, KZSR, XY BN CV; BATR HA UL WV

A pair of earphones from the Army, World War 2Two black bakelite earphones connected to metal hinges and two cloth band head rests. Brown material wire at receiver fitting end; there is no connection fitting.Type TH 37A|OTE-49028 (on metal)|Telephonics Corporation New York NY OTE 490 800HZcommunication, radio, arms, ordnance

A telegraph or Morse key, sends a series of electrical signals down a telegraph line or via radio frequencies; the signals are interpreted as Morse code, a binary form of language constructed of 'dots and dashes', combinations of which correspond to letters of the alphabet. The motion of the key acts to complete an electrical circuit between the sender and receiver, producing a short pulse 'dot' or longer 'dash,' the space between the code indicates a broken current or wave.Device used to transmit telegraphic messages in Morse code through the manipulation of electric signals. The metal 'key' sits in a central bracket on which it moves up and down aided by a spring, controlled by an operator pushing the black Bakelite knob on the protruding end of the device. The motion presses the key onto a circular metal disc, completing the circuit and sending an electrical pulse to the receiver. The apparatus is secured to a wooden base with wires attached to the terminals; a cut out section of the base suggests wires may have entered through this area, attaching to a battery.Printed ink on base: "PMG"telegraph, telegraphist, morse code, mechanisation

This was the first press photograph transmitted by radio from England to Australia. On 16 October 1934, South Australian aviator, C J Melrose, was pictured beside his plane at the Mildenhall aerodrome, England, preparing for the start of the Centenary Air Race. Within hours of capture, the image was transmitted from London to Melbourne and then sent via picturegram to Sydney’s press, the greatest distance a photograph had been transmitted over radio. Wirephotos, as they are commonly called, are produced through electrical pulses which travel along telephone or telegraph wires, or radio waves. Like the transmission of Morse dots and dashes, the technology communicates the light and dark portions of an image, to be recorded on a negative or photographic paper at the receiver’s end. Previously, photographs of an event appeared several days after the fact; wirephoto technology enabled visual communication with relative speed. Our consumption and expectation of the immediacy of news and communication continued to grow, an expectation that forms the basis of time-based social media activities such as Snapchat or Facebook and Instagram stories.london to melbourne air race, wirephoto, picturegram, uiver, james melrose

Set and cabinet made by Mr. P. J. Sebire in 1926.Wooden cabinet wireless set (Super Neterodyne) and separate metal speaker. Five-valve battery operated wireless receiver. Two (2) doors, hinged lid, plastic clear cover and brass handles.Serial Number VK3MXradios

The first transistor radio (the Regency TR-1) was produced by Regency Electronics in cooperation with Texas Instruments in 1954. Transistor 4 , the AWA transistor radio was manufactured by Amalgamated Wireless Australasia Limited (AWA), Australia's largest and most prominent twentieth century producer of radios, televisions, audio and telecommunications equipment. Transistor radios went on to become the most popular electronic communication device of the 1960s and 1970s. Billions of transistor radios are estimated to have been sold worldwide between the 1950s and 2012. They were exceptionally popular amongst young people in Australia due to their portability, allowing them to be taken wherever you wanted to gather with friends or, due to the headphone attachment, without disturbing those around you. These pocket radios are representative of technological developments which had a vast influence on social life and activities throughout Australia.4 pocket transistor radios of various brands. No. 1 orange Sanyo RP 1280 manufactured in 1979/1980. No2. is white bakelite No. 2 K--181 pocket transistor made by the Kmart Corporation c1975 and No. 3 is a Nation Brand AM Portable Receiver made in Hong Kong c1980. No. 4 Is an AWA Radiola B121 Solid State pocket transistor. All of them include a socket to plug in an ear piece.No. 1 on the front "SANYO RP 1280 and tuning dial. On the back: "SANYO MODEL RP 1280/ DC 3 V 2 x "AA" BATTERY/ SANYO ELECTRIC CO. LTD." No. 2 on the front "K-181" and tuning dial. On the back "Code 600-857/ AM POCKET RADIO/DC-3VC (UM-3x2)/ART 181. HONG KONG" No. 3 AM Portable Receiver Nation Brand on front No 4. on the front: below dial - AWA Radiola B121 ad at bottom "SOLID STATE" On the back: AWA Thorn Consumer Products Pty. Ltd./Model No. B121/Batteries 2 x UM-3 OR AA Cells/AM 520 -1620KHz/ Serial No. 75686/ Made in Hong Kong"radio communications, transistor radio