# Quick Answer: How Far Do FM Transmitters Work?

## How far will a 100 watt FM transmitter reach?

The extra power will allow the signal to penetrate more effectively.

Once again 100 watts on a 15 foot mast (flat land scenario) may only be effective for 5 miles.

Raise that antenna height to150 foot and the coverage could be increased to 50 miles..

## How far will a 50 watt FM transmitter reach?

If 50 Watt ERP is used, it’s very likely that 20 miles of range will be achieved. This is because 50 Watt ERP is ample power to propagate a strong signal 20 miles. If 1 Million Watts of power is used, it is very likely that signal will only propagate just over 20 miles.

## How do you determine the range of an FM transmitter?

The basic formula is 10n * log10 (d) + C, where d is the distance of the transmission, n is the path loss exponent and C is a constant. For a broadcast of 6 watts, the transmission range will be 3 miles. At 15 watts, the range increases to 5 miles, at 40 watts to 10 miles and at 100 watts to 15 miles.

## How far will a 15w FM transmitter broadcast?

1 to 2 milesI have the antenna outside and the unit broadcasts very clear unless I overdrive the line input. Very clear and professional sound. It will broadcast 1 to 2 miles and does the job for our church excellently.

## What walkie talkie has the longest range?

Midland LXT500VP3 Walkie Talkie The LXT500VP3 from Midland is a true long-range walkie talkie which, under ideal circumstances, will provide an effective range of more than 20 miles.

## How far can you talk on 2 meters?

On VHF frequencies such as 2-meters, antenna height greatly influences how far one can talk. Typical reliable repeater range is about 25 miles (40 km). Some repeaters in unusually high locations, such as skyscrapers or mountain tops, can be usable as far out as 75 miles (121 km).

## Can I turn my phone into a FM transmitter?

Some Android phones come with built-in FM transmitter functionality, in which case you can use this natively or with a free app such as Quick FM Transmitter and then broadcast the MP3 and other audio files on your phone to your car radio.

## How far can a radio transmitter transmit?

So realistically, for two people carrying a handheld two-way radio, the maximum communication distance on flat ground with no obstructions is around 4 to 6 miles. So you may be wondering why you see radios that have range claims of 25 miles or higher. Technically they could communicate that far.

## How far will 25 watts transmit?

For example, a 25-watt marine radio will roughly have a maximum range of 60 nautical miles (111 km) between antennas mounted on tall ships, but that same radio will only have a range of 5 nautical miles (9 km) between antennas mounted on small boats at sea level.

## Can ham radio be traced?

Your signal can be tracked. It’s known as DF (Direction Finding) in the amateur radio world. Hams have made a sport of it which is called Fox Hunting. … When it comes to an Amateur Radio license in the US, yes you can be tracked by that since it’s public record.

## How far can a 1 watt radio transmit?

Car, Boat, & Other Radios (Mobile & Fixed-Mount)Average Range Guidelines *WattageFlat Open Terrain (miles)Inside Buildings (floors)1 watt (UHF)2 – 36 – 82 watts (UHF)3 – 415 – 202 watts (VHF)3 – 59 – 115 more rows

Part 15 certified FM transmitters can be used legally by anybody, anywhere in the U.S. without the need for a license.

## Does AM or FM travel further?

The difference in the way AM and FM radio signals are encoded means differences in sound quality, performance, and broadcast range between the two types of station. This explains why FM stations sound better than AM stations, but AM stations can be heard from further away.

## What is the most powerful radio station?

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.

## Is AM or FM Better?

With FM, the frequency (the number of times each second that the current changes direction) of the carrier signal is varied. FM signals have a great advantage over AM signals. Both signals are susceptible to slight changes in amplitude. With an AM broadcast, these changes result in static.

## How far can FM radio reach?

Reception distance VHF Radio waves usually do not travel far beyond the visual horizon, so reception distances for FM stations are typically limited to 30–40 miles (48–64 km).

## What is the least used FM frequency?

The lowest and almost-unused channel, channel 200, extends from 87.8 MHz to 88.0 MHz; thus its center frequency is 87.9 MHz.

## How can I increase the range of my FM transmitter?

To increase transmission range, the antenna gain and height must be increased for both systems. There are two ways to increase the antenna gain. 1. Stacking (adding) antennas to increase antenna power gain.

## What is the best radio frequency for FM transmitter?

The FM Transmitter is one of the few transmitting devices available that is FCC approved. Choose any FM frequency between: 88.1 MHz to 107.9 MHz. Enter your City (or Zip Code) and State to find the best unused FM Frequencies in your area. Using unused frequencie will ensure optimal performance with your FM Transmitter.

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).

## What frequency can I use without a license?

What can I do? Almost all GMRS radios also support FRS frequencies, which can be used without a license. Channels 8-14 on a typical 22 channel consumer radio reserved exclusively for FRS. These channels can be used license-free, but are limited to a half watt of transmit power and will have limited range.