A cream coloured cardboard cover with a white label on the front. Typed on the label reads Radion Stage 111 Communication Receivers. The manual is held together with three metal staples down the left hand side.manuals, radio stage, communication receivers

This field telephone was developed primary for military purposes (World War I) and other wars/military interventions there after. It was the first "mobile" telephone which had a prime objective of providing isolated or "hard" to connect with locations instant communication links. Like a lot of "new" technologies it evolved from a war environment. This handset was used to connect offices and workshops, which due to their functions could not be co-located with their prime office(external workshops).The evolution from the early 1900s to the mid 1980s when mobile communication technology progressed in leaps and bounds from hard wire telephone communication to mobile digital receivers. This handset was manufactured by a subcontracted Australian company under the Australian Post Office mandate.This handset is significant in that it was donated by the Mount Beauty Timber yards and formed an integrated part of its communication system with its out lying work yards and buildings, before the mobile handset evolution. This handset was located in an environment which required a rugged and reliable day to day communications linkage as a vital part of its logistical (business) survival. As progress demands it, the faster that customers are satisfied with the service they obtain from suppliers the longer those services will be asked for and the longer and more profitable the supplier will be. This edict is as true for rural companies as it is for small or large city businesses. The customer is "always" right.This sturdy field telephone has a shell housing made in black bakelite material with a "U" form housing the major components (wiring, magneto and batteries). The main housing has two metal bells, with a central ringer between both, on the top part (to notify incoming calls). In front of the main structure is a box with the telephone hand piece (ear and mouth receptacles) nestled on two cradles. An on/off switch is activated when handset is removed from its cradle. On the front of the control box is a winder handle(to ring off) and in a field situation to activate/deactivate the magneto. To the left of the winder but on the the main body are two wind up connection buttons for the connection of operational wires (power)On the main right hand front body and next to two chrome switches is a plate with "L (next to the top switch) and below this "L2" and underneath this are "or" "EARTH". There is a plate fastened to the front of the handset and behind the winder with "REPLACE HANDSET WHEN FINISHED" and below the winder 'SERIAL NUMBER 5116"field telephone, world war ii field telephone f mk i

The BC-639A is a ground based AM VHF receiver covering the nominal frequency range of 100 -156 m/cs. The set was built for the U.S. Army Air Force in WW2 as part of a communication system to communicate with aircraft. A system of similar intent was built in Australia during WW2 by Radio Corporation of Victoria (ASTOR), with the addition of FM facilities. This system used the ARl7 receiver and ATl7 transmitter. Many of the sets had been modified after the war by the then Dept of Civil Aviation for use as monitoring receivers.This type was used at the AeradioThe BC-639A is a ground based AM VHF receiver covering the nominal frequency range of 100 -156 m/cs. The set was built for the U.S. Army Air Force in WW2 as part of a communication system to communicate with aircraft. Dark grey US Military colourradio receiver, bc 639, bc 639a, 639, aeradio

Black KM2 bakelite military field use telephone with attached hand-receiver and spiral cord in battery charger.Three plaques, battery instructions, model and serial number, mod.record, off ring and buzz settings, at back: L1, L2, CBS, MAG, CBtelephone, communication, field telephone

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

Receiver was obtained from Supply Branch of Telecom Australia. It was located by Harold Bakes (early member of the Nunawading Historical Society) at the Hawthorn Line depot and Society purchased. It was stored at the former City of Nunawading Depot in Station Street, Nunawading. It was noticed by Postal Services when they were building the Nunawading Mail Exchange and loaned to them whilst it remained in the City of Nunawading at the Mail Exchange. The had it refurbished and it stood in the Mail Exchange vestibule. When the exchange closed it was taken to Dandenong. It took much negotiation before it was returned to the Society.Alternative Name: Letter Receiver Large round cast iron Letter Receiver surmounted with a gold crown on domes to pointed top. Top has a gold cast iron fancy fringe and below on the main body a further gold plain fringe. Door follows the contour of the round receiver and cover about on of the body. Handle of door is in shape of a fist painted gold. Receiver is mounted on a cast iron base (could have been all cast together) approx 3/8 of the overall height of 250cm. Receiver is painted Pillar Box Red - base which is placed in ground is mid green. From a similar Receiver installed near the Prahran Railway it would appear that half of the base is above ground. Station It has five oblong holes. Cast into the body between the two fringes are a letter opening and two words POST OFFICE and Receiving Pillar.Cast into Receiver - POST OFFICE / Letter Receiver In door - transfer with crown and E11Rcommunication, postal, historical society

Used to communicate with the local telephone exchange and for connection to other subscribers. The introduction of automatic exchanges saw the their demise. This phone was used in the family home of the donor at Caboolture (aboriginal for carpet snake) during the 1940s and 1950s.A magneto telephone for communication with a manual telephone exchange. The handle on the right hand side, which was turned to rotate the magneto to call the exchange - ask operator for a number and then to be connected. Telephone enclosed in a specially designed box for mounting on the wall. There was a bell on top which rang when the magneto ringer at the exchange was turned. Fitted with a carbon microphone mounted on the front of the box for the transmission of the spoken word and an electro- magnet. A receiver which hangs on the left hand side on a hook. The hook acts as the on and off switch to answer the call and to switch on the battery to provide power for the receiver and energize the transmitter. There is an angled ledge for writing any messages. There is no battery. The circuit for the phone is on the inside of the door to the interior of the phone. pHone is type CDA116 - PMG Registered - Ericsson.communication, telephonic

A portable radio receiver and VHF transmitter used by the Sea Pilot Service. An early model used from about 1956 for ship-to-ship and ship-to-shore communication during arrival and departure procedures.Used by the Port Phillip Pilot service in the 1950sMiniphone radio receiver / transmitter and carry bag MFD by Commonwealth Electronics Pty Ltd Type No 180TRN Serial No 184communication, radio receiver and transmitter

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

After the 1939 bushfires, the Forests Commission invested heavily in a radically new communications network. After suffering some inevitable delays due to the War, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. The communication systems were regarded at the time to be more technically advanced than the police and the military. Pye-Electronic Pty Ltd (which had taken over Radio Corporation after the war) decided to design a transceiver to replace the RC16B. Designated the TRP-1, it was considerably lighter and used less power than the earlier RC16B while offering similar or better performance. This radio was used in the Mt Wombat fire tower which overlooks the Strathbogie Ranges and surrounding farmland.Portable Radio PYE TRP-1. radios, forests commission victoria (fcv)

The Heliograph MkV is a fascinating piece of historical surveying and communications equipment. It was primarily used for visual signaling by reflecting sunlight with a mirror to send coded messages over long distances. This method was primarily useful in remote areas where other forms of communication were not available. The MkV model, specifically, was widely used by the British Army and other military forces from around 1906 until the mid 1960s. It remained in use with the Australian Army Survey Corps until the mid 1980s. The device typically included a 5 - inch mirror and was often mounted on a tripod for stability. Initially the instrument was used to communicate between survey stations using Morse code to coordinate their activities. Later when better forms of communication were available they were used for precise angle alignment where the sunlight reflection from the mirror was targeted between the survey stations to give very accurate results. The MkV was relatively light weight and portable, making it ideal for use in the field. It could be setup and adjusted quickly. The heliograph had an adjustable mirror that could be tilted to reflect sunlight towards a distant receiver. Surveyors could align the mirror using a sighting device. Whilst it was primarily used by the Military it was also used in civil surveying particularly in the remote areas of Australia. This instrument was used as a training aid to help teach surveyors at the Royal Australian Survey Corps School of Military Survey. Catalog item No 2009 is a tripod that was used to mount the Heliograph whilst being used for surveying.A Heliograph containing two mirrors with brass surrounds mounted on a wooden board as a Training Aid. Item has additional parts attached to the base board."Heliograph Mk V Training Aid"royal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt, asr

The Heliograph MkV is a fascinating piece of historical surveying and communications equipment. It was primarily used for visual signaling by reflecting sunlight with a mirror to send coded messages over long distances. This method was primarily useful in remote areas where other forms of communication were not available. The MkV model, specifically, was widely used by the British Army and other military forces from around 1906 until the mid 1960s. It remained in use with the Australian Army Survey Corps until the mid 1980s. The device typically included a 5 - inch mirror and was often mounted on a tripod for stability. Initially the instrument was used to communicate between survey stations using Morse code to coordinate their activities. Later when better forms of communication were available, they were used for precise angle alignment where the sunlight reflection from the mirror was targeted between the survey stations to give very accurate results. The MkV was relatively light weight and portable, making it ideal for use in the field. It could be setup and adjusted quickly. The heliograph had an adjustable mirror that could be tilted to reflect sunlight towards a distant receiver. Surveyors could align the mirror using a sighting device. Whilst it was primarily used by the Military it was also used in civil surveying particularly in the remote areas of Australia. The British Army Mark V version uses a flat round mirror with a small unsilvered spot in the centre. The sender aligned the heliograph to the target by looking at the reflected target in the mirror and moving their head until the target was hidden by the unsilvered spot. Keeping their head still, they then adjusted the aiming rod so its cross wires bisected the target, they then turned up the sighting vane, which covered the cross wires with a diagram of a cross, and aligned the mirror with the tangent and elevation screws, so the small shadow that was a reflection of the unsilvered spot hole was on the cross target. This indicated that the sunbeam was pointing at the target. If the sun was in front of the sender, its rays were reflected directly from this mirror to the receiving station. If the sun was behind the sender, the sighting rod was replaced by a second mirror, to capture the sunlight and direct it onto the main mirror to reflect it to the receiving station.. 1 Brish Army "Mance" Mk V A253 Heliograph has two 125mm diameter mirrors on a brass arm with targeting attachments. The Instrument is mounted on a three-legged tripod of brass and mahogany with spiked feet, approximately 1.2 metres high. The instrument was made by LUCO Art Metal Co Ltd, London in 1940. .2 A military green metal carrying safety storage case with khaki shoulder strap.A253 stamped on instrumentroyal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt, asr