XERF is the most powerful commercial radio station in North America and the third most powerful in the world. With its mammoth transmitter across the Rio Grande in Ciudad Acuna, Mexico, XERF can increase its signal up to five times the 50,000-watt limit allowed by the U.S. Federal Communications Commission.
What is the highest AM radio frequency?
Footnote 1: The wavelengths of AM radio signals vary from a maximum of 555 meters (1821 feet) at 540 kilohertz (kHz), the lowest AM carrier frequency used in the United States for broadcast stations, to a minimum of 176 meters (579 feet) at 1700 kHz, the highest carrier frequency at the upper end of the AM expanded …
What is the maximum power allowed for a standard AM broadcast station in the USA?
While US and Canadian Class A stations are authorized to operate at a maximum of 50,000 watts day and night (and a minimum of 10,000 watts at night, if grandfathered), certain existing Mexican Class A stations, and certain new Cuban Class A stations are authorized to operate at a higher power.
What is the most powerful radio transmitter?
With an output power of 2000 kW (2 MW), it is the most powerful radio transmitter in Europe and is among the most powerful radio transmitters in the world.
|Location||Solt, Bács-Kiskun, Hungary|
|Construction started||6 September 1974|
|Completed||10 January 1977|
Which is more powerful AM or FM?
FM uses a higher frequency range and a bigger bandwidth than AM. … Each FM station is allocated 150 kHz of bandwidth, which is 15 times that of an AM station. This means that an FM station can transmit 15 times as much information as an AM station and explains why music sounds so much better on FM.
What is the range of AM radio?
The Amplitude Modulated (AM radio) carrier frequencies are in the frequency range 535-1605 kHz. Carrier frequencies of 540 to 1600 kHz are assigned at 10 kHz intervals. The FM radio band is from 88 to 108 MHz between VHF television Channels 6 and 7.
What is the frequency range of AM?
The frequency band used for AM radio is about 550 to 1720 kHz. This is the range of carrier frequencies available. The information transmitted is music and talk which falls in the audio spectrum.
Is it legal to transmit on AM?
UNLICENSED LEGAL AM
The legal limit for AM broadcasting is 100 milliwatts, with a maximum antenna length of about 10 feet (this is highlighted in Part 15 as well). … A note about Part 15 – it does not require that you use a transmitter that has been type-accepted, so it is “legal” to use a homemade transmitter or a kit.
What is the most powerful FM radio station?
The station which currently has the highest effective radiated power is WBCT, Grand Rapids, Michigan, with an ERP of 320 kW.
How far will a 1000 watt FM transmitter reach?
If an ERP of 1000 Watt is used, it is very probable that the signal will reach 20 kilometers, and it will also penetrate eventual obstacles.
What is the most powerful radio tower in the world?
The world’s most powerful radio transmitter has been put into operation by the U.S. Navy at Jim Creek Valley, Washington, in the heart of the Cascade mountains. View from transmitter building along the antenna lead-in trunk, shows 145 foot bus tower halfway up mountain, one of thirteen which support transmission line.
Is Pirate Radio legal?
Pirate radio or a pirate radio station is a radio station that broadcasts without a valid license. In some cases, radio stations are considered legal where the signal is transmitted, but illegal where the signals are received—especially when the signals cross a national boundary.
How far will a 15 watt FM transmitter broadcast?
At 15 watts, the range increases to 5 miles, at 40 watts to 10 miles and at 100 watts to 15 miles. The general rule of thumb is it will take four times the power to double the transmission distance. Increase the transmission range of the FM antenna without increasing the power by raising the antenna.
Why is AM radio so bad?
AM stands for Amplitude Modulation and has poorer sound quality compared with FM, but it is cheaper to transmit and can be sent over long distances — especially at night. The lower frequencies of the band we use for AM signals creates a wavelength that is extremely large.
Why is AM reception so bad?
The main problem affecting AM signals is electrical interference. Also, the bouncing pattern causes AM signals to fade under bridges or in tunnels. The high-frequency FM signal is limited to a smaller reception radius, around 50 miles.
Why is AM radio still used?
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as “AM band”) transmissions, but also on the longwave and shortwave radio bands.