What goes further UHF or VHF?

VHF radio signals are on the low end of the frequency scale when compared to UHF. Although, VHF signal wavelength is longer, allowing it to travel farther than UHF.

Is UHF or VHF better for distance?

VHF frequencies can penetrate objects better than UHF. VHF can also travel farther. If a VHF wave and a UHF wave were transmitted over an area without barriers, the VHF wave would travel almost twice as far.

Why VHF is better than UHF?

Radios with lower frequencies (VHF) have longer wavelengths, making them ideal for work across wide areas free from obstruction, as well as outdoor use. UHF radios operate at a higher frequency, which is ideally suited for wireless communications that need to penetrate buildings, walls, concrete, or other barriers.

What 2 Way radio has the longest range?

How far can UHF travel?

Since UHF transmission is limited by the visual horizon to 30–40 miles (48–64 km) and usually to shorter distances by local terrain, it allows the same frequency channels to be reused by other users in neighboring geographic areas (frequency reuse).

VHF vs UHF - What's the difference

How far does VHF transmit?

A typical VHF station operates at about 100,000 watts and has a coverage radius range of about 60 miles. A UHF station with a 60-mile coverage radius requires transmitting at 3,000,000 watts. So there is no clear choice for which is better, VHF or UHF.

Why does military use UHF?

UHF allows for the transfer of much more information because at the higher frequencies proportionally more information can be multiplexed onto the carrier (transmit frequency).

Which frequency is best for long range?

VHF and UHF Radios Compared - Which Is Best? VHF (136 - 174MHz) signals generally work best outdoors, giving a somewhat longer range for the same power output than UHF (400 - 470MHz).

What type of radio has the longest range?

1. Motorola T470 2-Way Radios. The T470 is a powerful option from Motorola; it boasts an up to a 35-mile range, and it has 22 channels and 121 privacy codes to more easily stay in touch with your party. The channels include FRS and GMRS.

Is there a walkie-talkie that can reach 100 miles?

Motorola Talkabout T465 Rechargeable Two-Way Radio Bundle (Green)

Do police use UHF or VHF?

Police radios operate in a 700/800 MHz UHF band. This gives them a considerable amount of range which is pretty good in urban areas. The P25 radio systems give an improved range for officers. Getting a larger antenna on your walkie talkie can improve the amount of range you receive.

Can UHF penetrate walls?

UHF radio waves generally only go as far as line of sight. Anything in the way of your sight will also interfere with frequency range, such as buildings, tall trees or any other obstruction. The transmission is high enough to penetrate through building walls, making indoor reception a possibility.

Is a marine radio UHF or VHF?

Aviation and marine communication are conducted exclusively on VHF radios. They are also used by outdoor security personnel, maintenance workers, and in wide open fields, from golf courses to concerts and other large outdoor festivals. VHF signals are not able to move as freely through metal and concrete like UHF can.

What range do UHF radios have?

All UHF radios are restricted to line-of-sight transmission of up to 8km (although by using public repeater stations, in theory, their range increases up to 150km). A realistic range is 3km-5km of clear transmission for most in-car or hand-held units in vegetated areas.

What radios do the military use?

The AN/PRC-117F Multiband/Multimission Radio, currently in use by all the U.S. military services, is a 30-to-512 MHz-band radio that incorporates several different software-defined waveforms, such as SINCGARS, HaveQuick, and old Type 1 encryption modes.

How far can a handheld VHF radio transmit?

For normal handheld use (at five-watt transmit power), figure on a three-to-eight mile range from a small boat, compared to 15 to 20 miles with a fixed-mount radio (at 25 watt transmit power.)

Which wave is better for long distance communication?

Sky waves are radio waves reflected by the ionosphere. Therefore, the propagation of these waves is not limited by the curvature of earth. So, these can be used for beyond the horizon communication. Thus, sky waves are used for communication over long (inter-continental) distances.

How far is 400 470 MHz range?

Thus the typical ranges with around 400 MHz frequency range with 1 W transmitter power are up to ~30 kilometers and up to ~80 kilometers with 10 W transmitter power.

What is the best frequency for two way radios?

UHF radios (Ultra High Frequency) operate on frequencies ranging from 400-512 Megahertz (MHz). UHF radios work best for most two-way radio users because the waves are shorter and can get around or penetrate areas of interference, like those found in buildings, thickly wooded or hilly areas, and urban outdoor settings.

What frequency does the Air Force use?

The band 225-328.6 MHz is used for a diverse array of land-based, airborne, maritime, and satellite radio communications services by the military forces, National Guard units, Federal Aviation Administration (FAA), Coast Guard (CG), National Aeronautics and Space Administration (NASA), Department of Energy (DOE), and ...

Can civilians use UHF?

Business Radio Service (BRS) describes a series of frequencies on the VHF and UHF two-way radio bands. They are reserved for use by businesses, and in some cases, by individuals. In the United States, private use of these frequencies requires a federal license issued by the U.S. FCC.

What frequency do pilots use?

However, the frequency 123.45 MHz is designated as an air-to-air VHF communications frequency to enable aircraft engaged in flights over remote and oceanic areas out of range of VHF ground stations to exchange necessary operational information and to facilitate the resolution of operational problems.

How far does a VHF antenna reach?

Combined with the 12-foot height of your antenna, the two of you could converse while about 6.7 miles apart. If the Coast Guard's antenna is 100 feet tall, you can expect a reliable range of about 13 miles. Your buddy's 18-foot antenna would net him a range of about 13.3 miles.

What is the range of VHF antenna?

It is often stated to be about 10 to 25 miles. What affects the range? Heights of the antennas (both transmit and receive) and the terrain between the two. VHF radio's signal travels in a straight line and because of the curvature of the earth, the height of the antenna is the single most important factor to consider.

Does VHF work on land?

Marine VHF radios, whether fixed or handheld, may not be used on land, period. It's the law. Once a VHF radio goes ashore, it cannot be used for marine band transmission (without a Coast Station License).