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Some emergency radios can also be powered by an attached solar panel. One element that separates some emergency radios from other types of radios, is the ability to broadcast alerts from the Emergency Alert System, even when the radio sound is turned off. This is especially useful in areas where sudden storms, tornadoes, tsunamis or other fast ...
In present Freeplay radios and other products, clockwork mechanisms storing energy in a mainspring have now been replaced by small batteries charged by cheaper hand-crank generators. [9] Freeplay Energy produces a variety of consumer devices in addition to radios, including flashlights, lanterns, mobile phone chargers, and foot-powered generators.
Voyager Pro KA600 Hand Crank Emergency Radio. This is the most advanced model from Kaito’s Voyager line, and can be used as a daily radio as well as an emergency backup. Power options include an ...
During World War II, Germany developed a hand-crank 500 kHz rescue radio, the "Notsender" (emergency transmitter) NS2. It used two vacuum tubes and was crystal-controlled. The radio case curved inward in the middle so that a user seated in an inflatable life boat could hold it stationary, between the thighs, while the generator handle was turned.
C. Crane Skywave SSB Battery Operated Portable Travel Radio AM, FM, Shortwave, NOAA Weather Alert, Scannable VHF Aviation Band and Single Side Bands. C. Crane is an American electronics retailer based in Fortuna, California. The company mainly deals in specialty radio and lighting equipment and is best known for its GeoBulb line of LED light bulbs.
Crank powered flashlights often have radios and other features. One popular feature is a 5-volt USB charging port for recharging cell phones when an outlet is not available. The quality and long-term reliability of these devices vary over a wide range, from high-reliability mil-spec emergency equipment down to one-time-use non-repairable ...
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Biophone Model 3502; unit shown is identical to the one used on the television show Emergency!. The Biophone is a combination voice and telemetry radio communications system used in the 1970s and 80s by paramedics to talk to the physicians supervising them from a hospital base station.