![]() This AM radio has audible hazard alerts and comes in a choice of English, Spanish or Chinese. When you want an AM radio specifically for severe weather alerts or emergency protocols, the Retekess V115 Portable Shortwave AM Radio is the one to have. It can be powered by batteries or an adaptor, depending on where you’d like to use it. With an extension antenna and a manual knob for selecting your station, this AM radio will take you back in time. The Panasonic RF-2400D AM/FM Radio works similarly, making it as retro as you can get. When AM radios first came out, they required an analog tuner and antenna for getting the best reception. There is a place for batteries as an additional backup, and if all else fails, you can purchase an adapter separately for listening while in the house. This radio features not only a solar panel, but also a hand crank generator that will keep it going in case of a cloudy situation. The Kaito Solar AM Radio is great for a day at the beach or out on the boat. If you prefer to keep the adapter on hand, you can purchase that separately through Sangean. It is battery-operated, and the digital display features a battery power level indicator. With an aesthetically pleasing design, rubber bumper around the edges and preset options, this AM radio is great for hauling around the house. The Sangean AM/FM Portable Digital Radio is an excellent option. If you like to travel with your radio, even if it’s just from room to room in your house, you’ll want to opt for a portable AM radio. Now that you know all about how an AM radio works, let’s look at the different types. In addition to that sensitivity, it only picks up strong signals from 200Hz to 5kHz, making it ideal for talk shows more than music. It is so sensitive that when lightning gives off electricity, the AM radio will pick up that change in electric activity. The only con to this function is that it allows for more static and noise, particularly when there is inclement weather. The reason that AM radio has stayed around for so long is because it can transmit signals over very long distances. Each country has other frequency that their AM and FM radios transmit, so if you travel often, you may be surprised to see music and talk shows coming through at different channel settings. The frequency range that AM transforms is from 520kHz to 1710 kHz in the U.S. The combination of amplitude transformations creates a noticeable pattern either in words or music. So, for each level of amplitude, a different sound is heard by the listener. The radio takes the amplitude or height of the signal and transforms it into a single sound. The way this is accomplished is called amplitude modulation. The electricity has to be changed into a format that can be understood. A quiet mouth tells us nothing, but once it starts to talk, it creates a change that is understandable to the listener. The best way to think of it is simply a way of communicating. ![]() In order to hear music or voices through the radio, the waves must be changed from their random patterns. So, what is modulation? Think of it simply as a change. For it to be transmitted as a coherent message, it has to undergo “modulation.” This is where the AM and FM get their names. It is often explained as electricity in the air.Īs this electricity is given off, it makes unorganized sound. These are considered low-frequency, but still emit a small amount of electromagnetic radiation through the wires into the air. This basically translates to the current being able to change direction in the wire roughly 60 times per second. In the United States, the AC works with 120 volts at 60 hertz. It works at different levels in each country, which is why you may need to travel with a special connector for outlets to use American electronics overseas. ![]() This current is used to make all our electronics function. They are close to light waves, but our eyes just can’t see them.Īlternating Current (AC) generates electromagnetic waves. Radio waves can reflect, polarize, diffract and refract. Each electromagnetic wave has attributed characteristics that are different from each other. Radio waves are a specified length or frequency of electromagnetic waves that are all around us. However, before we look at the reasons to have one, let’s talk about how they work.ĪM or Amplitude Modulation is a type of radio that utilizes radio waves that are transmitted through the air. Perhaps one of the best reasons to keep an AM radio in the house is for live alerts of current happenings. They have had a long life and continue to serve a purpose for many people. When the radio was invented, they were a popular luxury to have in your house. Although they are often though of as a thing of the past, AM radios are still a valuable asset to have around the house.
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