This ensures that they are always operational, even if you run out of batteries. Some of them are battery operated but you can also find solar powered emergency radios as well as models that are powered by a hand crank. Emergency Portable AM/FM RadiosĮmergency portable AM/FM radios are designed to be used in an emergency situation to recieve important audio information or warnings from news stations. Panasonic RF-2400 AM/FM AC/DC Portable Radio. They feature one or even two built-in speakers. AM FM Radio with Speaker and Earphone Jack, Small Transistor Radio, Battery Operated, Best Mini Radio Antenna Reception for Emergency by MIKA (Black) 15 4.4 out of 5 Stars. These radios are designed to withstand bumps and drops as well as exposure to dust and debris. Portable AM/FM jobsite and rugged radios are designed for outdoor use on construction or digging sites. Many of them feature stands or handles so you can prop them up or hang them in your shower. Some of them are completely waterproof and you can take them into the shower with you while others are simply water resistant and they are safe to use in wet areas where they might get splashed. Portable AM/FM shower radios are designed to be used in or around the shower. Many of these radios also have a built-in wrist strap so you can comfortably hold them or hook them to your belt loop. Some of them are designed to be used with headphones and some of them feature a built-in speaker. Pocket AM/FM radios are some of the smallest portable radios available. You can even find AM/FM radios that are water resistant as well as ones that are designed to be used in emergency situations. Some are small enough to carry in your pocket and some are rugged and durable to withstand rigorous conditions. There are many different types of portable AM/FM radios available. You can listen to music on your favourite FM stations or catch up with news and current events on AM stations. AM FM Portable Radio Battery Operated Radio by 4X D Cell Batteries Or AC Power Transistor Radio with and Big Speaker, Standard Earphone Jack, High/Low Tone Mode, Large Knob. The modern electronics boom had begun.Portable AM/FM radios are great for taking music with you on the go. Within a year, other companies, such as Emerson, General Electric and Raytheon, all began selling transistor-based products. Texas Instruments devised processes for mass-producing transistors for their radios, and in the process, proved that transistors and their subsequent products could be affordable, more portable and more effective than vacuum tubes. The transistors, though, were what really made the project possible. The speaker, capacitors, and other components were created just for this project. 18, 1954.įrom start to finish, the race to create the TR-1 required innovative new parts that would fit inside a pocket-sized case, which would be small enough to really capture the world's attention. Together, the two companies created a radio called the Regency TR-1, which was announced on Oct. Texas Instruments used Bell Labs' breakthroughs in germanium transistors to develop a small, pocket-sized transistor radio, with the help of a small Indiana company named IDEA. Device manufacturers had been using vacuum tubes profitably for many years, so they were understandably leery about switching to transistors.īut Pat Haggerty, vice president at a company called Texas Instruments, was convinced that transistors were going to revolutionize the electronics industry. In 1954, transistors were proven but novel electronic components. Convincing manufacturers that this basic concept would work on mass-produced products, however, wasn't such a simple task.
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