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The typical portable tube radio of the fifties was about the size and weight of a lunchbox and contained several heavy, non-rechargeable batteries—one or more so-called "A" batteries to heat the tube filaments and a large 45- to 90-volt "B" battery to power the signal circuits. By comparison, the transistor radio could fit in a pocket and ...
Like the other radios, this model receives emergency weather forecasts from NOAA and updates from AM/FM stations, and it has a 2000mAh battery equipped with a USB port to keep your phone charged.
By the early 1960s its wide product range included a most comprehensive range of audio and TV equipment. Small, battery-operated portable transistor radios to solid oak 6 ft wide hydraulic lid radiograms sporting fully automatic stackable Garrard turntables, multi-channel radios and 2-foot-wide stereo speakers were commonplace in many UK ...
A 22.5 volt battery provides power, since the only way to get adequate radio frequency performance out of early transistors was to run them close to their collector-to-emitter breakdown voltage. The current drain from this battery is only 4 mA, [ 7 ] allowing 20 to 30 hours of operation, in comparison to only several hours for the portable ...
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.
Portable radios typically are small enough to be hand held, or, for larger radios, have a handle or carrying strap. Portable radios may have an arrangement for powering from an outlet, conserving the batteries when an outlet is available. Portable "emergency" radios may be solar and/or hand crank powered. [7] Boom box - a portable battery ...
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