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I have a Philco battery-powered radio. It has a four-prong plug for the battery. Can I get a converter at Radio Shack and use it to make my radio work? No. The battery radios required 1.5 volts for the tube filaments and 67-1/2 or 90 volts for B (plate) voltage. The 3-way portables (AC-DC-battery) had built-in battery eliminators, and the tube filaments were generally wired in series, requiring a 6 or 9 volt A battery. You'll need to make a supply that can deliver 1.5 volts at about 400 ma. and 90 volts at about 50 ma. for your four-prong Philco. Both have to be good clean filtered DC. The power-pak-in-the-plug type power units sold by Radio Shack and others are made to deliver 6-9 volts at 100-200 ma. unfiltered DC.
Battery radios offer great bargains for modern collectors. Not everyone knows how to power them, so they often sell for less than their AC-powered counterparts. Many of them are still in amazingly good shape. Daunted by the expense and inconvenience of using large, costly, non-reusable batteries, many owners simply stored their radios in a closet or shelf, where they remained untouched for years.
Many battery-powered tube radios require only 1.5 volts for the A supply, which you can provide with ordinary 1.5-volt "Dl" cells (flashlight batteries). If more than 1.5 volts are needed, connect additional batteries in series. Two 1.5-volt batteries in series will provide 3 volts DC, and so on. Radio Shack and other retailers, sell inexpensive holders that simplify connecting multiple batteries.
Battery Powered Emergency Radios Top Selling Battery Powered Radios, Windup Radios & Boomboxes Includes Battery Operated Windup, Solar, TV's, AM/FM/Weather Radio's. Battery Powered Emergency Radios are varied and affordable. Every family should have one. Below we have put together some of the best options for emergency radios and radio/apparatus combinations you can find. If you are serious about the safety of your family, you should seriously consider these options.