“FM, which stands for Frequency Modulation, has better sound quality due to higher bandwidth. Also, the way the audio is encoded for FM makes it less sensitive to interference from electrical activity from storms or electrical devices than AM.

Causes of Poor FM Radio Reception Distance: You may be too far from a station transmitter to receive a good signal. Antenna type: If you have a directional antenna, it may not receive signals from multiple transmitter locations. On the other hand, if you have a multi-directional antenna, interference is more likely.

Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to provide high fidelity sound over broadcast radio. FM broadcasting is capable of higher fidelity—that is, more accurate reproduction of the original program sound—than other broadcasting technologies, such as AM broadcasting.

FM Radio Broadcasts FM radio uses frequency modulation. To understand frequency modulation, consider a signal with a steady frequency and amplitude. When the frequency is modulated between low and high, the carrier frequency is transmitting music or voice. Only the frequency changes as a result.

Radio fans will be able to carry on listening to FM and AM radio stations on older devices in cars and at home until 2032, ministers announced yesterday. New legislation will mean another delay in scrapping the analogue signal.

Seems so retro, but it is still useful. Nevertheless, AM radio has been in decline for years, with many AM stations going out of business each year. Now there are only 4,684 left as of the end of 2015.

On October 27, 2020, the FCC voted to allow AM stations to eliminate their analog transmissions and convert to all-digital operation, with the requirement that stations making the change had to continue to make programming available over “at least one free over-the-air digital programming stream that is comparable to …

There are over 6,000 AM stations in the U.S. today. And they still have a huge audience of listeners, typically locals who seek out the latest weather, traffic, and news information. Most still listen in their cars or trucks.

One reason AM broadcast is still around it is used mostly for talk radio. Talk radio does not require the quality of audio that FM can provide with music, so many AM stations went with talk radio. Talk radio has really saved AM. With FM and music AM cannot compete, but can provide good talk radio.

The following is a list of radio stations in the United States that are authorized to run 50 kW (50,000 watts) of power. This is the highest power authorized to any AM station in the United States….List of 50 kW AM radio stations in the United States.

Amplitude modulation is one way of transmitting radio signals across large distances. While FM has many advantages, AM is typically used in aviation. This is one reason that the aviation industry has chosen to use AM for communications rather than FM, allowing multiple signals to be broadcast on the same channel.

AM broadcasts use longer wavelength radio waves than FM broadcasts. Because of their longer wavelengths, AM waves reflect off a layer of the upper atmosphere called the ionosphere. In FM broadcasts, sound signals are encoded by changing the frequency of radio waves.

This isn’t the reason why AM sounds bad and FM sounds good. With AM radio, they’re allowed to carry by FCC regulations about 11Khz on each side of the AM carrier. So audio is decent, your car radio has narrow filters in it so you maybe only get about 5-6Khz audio bandwidth, making it sound muddy and low quality.

If you’ve got nothing better to do on one night, visit LiveATC.net, where anyone with a computer or smartphone and a passing interest in aviation can listen to control towers live, worldwide, and in full action. Student pilots use it to listen to their local airport to get accustomed to the myriad radio calls required.

The 5.9 GHz band, known as the Dedicated Short Range Communications Service (DSRCS), is intended to promote automobile safety….Public Safety Spectrum.

If a crew resets their transponder to the emergency code of 7700 (squawking 7700), all air traffic control facilities in the area are immediately alerted that the aircraft has an emergency situation.

The short answer is no. The long answer is no, with a long-winded explanation of how receivers can be detected but still with no practical police application. chaz0426 said: Sometimes right when I start scanning, it seems like a lot of the police and other utilities ect.

There isn’t any “Baofeng ban”. There is the illegal importation and marketing of radios “just like this one” for people to use for anything requiring a type-certified transmitter, since these don’t have any of those.

12 miles