Early radio

Early radio

V400/0082 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 62.7MB

Downloadable file size: 3.5MB

Price image Pricing

Please login to use the price calculator


Caption: Early radio. Box containing electrical equipment for an early radio. The two rectangular objects at upper right are the batteries. An adjustable slide device is seen at lower centre. In the lid of the box, at upper right, is a device that is operated by a switch on the outside of the box. At left, on an extendable cord, is a headphone or speaker device. Other switches (centre) are labelled with amounts of resistance in ohms. Changing the resistance is one way of tuning certain types of radio circuits to different frequencies. The first radio communications were developed in the 1890s.

Release details: Model release not required. Property release not required.

Keywords: batteries, battery, communication, communications, device, early, electrical, equipment, headphone, historical, history of science, machine, old, radio, receiver, resistance, resistor, rheostat, slider, speaker, technology, telecommunication, telecommunications, tuning

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.