There are two main formats for transceivers. They are Ultra High Frequency (UHF) radio and Very High Frequency (VHF) radio. Neither band is intrinsically better than others. All have their pros and cons. Both formats are effective ways to communicate with other people. But how do you decide which suits your needs? We go through the main components of the two frequencies to choose you.

UHF Radio

UHF radio operates between l 'Frequencies of 300 MHz and 3000 MHz Until recently, no, it was widespread. Now the radio is the UHF frequency for GPS, Bluetooth, cordless phones are used, and WiFi.

There are no more available channels with UHF so in more populated areas UHF may be less likely to have interference from other systems. If you're in an area where the population is thin, but it should work, VHF for you. Not long ago, the FCC has also opened a new FM frequency, called Murs previously used is not strong in many areas.And 'more Murs down VHF. If you are in an area where interference from other radio equipment can be a problem, UHF transmitters and receivers may be the best choice if you are using a VHF radio Murs. UHF is better penetrate physical obstacles like walls, buildings and rugged landscape. Everything is hampered a radio wave, weakening a radio signal. UHF and been weakened. Although it can not travel so far from radio waves penetrate obstacles better than UHF FM.

Tohighlight the differences in the indoor range is the following is an excerpt from a pamphlet by two leading makers predicted two-way radio on a range of lines of handheld VHF and UHF radio:

"Estimates of coverage: At full power, line-of-sight, does not hinder the range of about 4 miles +. VHF indoor coverage is about 270,000 square meters and 300,000 square meters, on UHF. Waited about 20 floors of vertical coverage VHF and UHF up to 30 floors. Note: The scope and coverageEstimates and are not guaranteed. "

FM waves do not penetrate walls very well, buildings and rocks. Therefore, the field will be significantly reduced for VHF radios in these environments. This is not necessarily a problem if the area is required, a few hundred meters. You can also use an external antenna to an FM indoor base stations will be used to reduce or eliminate this problem.

One disadvantage of UHF is that the FCC, you must obtain a license to operate inthese frequencies. Although many frequencies in the VHF and businesses need a license. If you have a radio frequency range VHF MURS can operate without a license. UHF equipment is usually more expensive. The components must be improved, and are expensive to build. This does not mean it is necessarily better, just more expensive.

One advantage of UHF transmission is physically short wave that is generated by high frequency. This means that the antenna onThe radio can also be shorter than a VHF radio equivalent.

FM Radio

VHF radio operates between the frequencies of 30 MHz and 300 MHz FM radio, two way radios and televisions work in this area.

Both VHF and UHF radios are sensitive to the line of view factors, but VHF a little 'more. The waves make the trees and rugged landscapes, but not as good as UHF frequencies fact. However, if a 'wave and a wave UHF FM were transferred in an area withoutBarriers, would be the FM waves travel almost twice as far. This makes it easier for VHF, the exhibition on a wide range. If you work mostly outdoors, an FM radio is probably the best choice, especially if you use a base station inside and add the external antenna.

From VHF to become longer and not so complicated, the equipment is generally cheaper than comparable UHF radio equipment. A disadvantage of this device is its size. Since the frequency of the wavesare larger, the antenna must be greater.

VHF radios also have a smaller number of available frequencies. Interference with other wireless devices may be more of a problem. However, the FCC recently, this is less a problem when they opened the frequencies murs. The 150 MHz spectrum is a national service called murs. MURS stands for Multi-Use Radio Service. This service is for use in the United States and Canada. This is a low-power, short-rangeService in the VHF 150 MHz Citizens Band radio frequencies. There are 5 MURS channels in the frequency range with 38 privacy codes under each one that you select only collect calls through the code. The FCC, not the users of products to be licensed Murs.

With Murs, you can improve a larger antenna or the external sector. If you want to put an antenna on your house or business, you can do with murs. Some antenna manufacturers claim an external antenna canIncrease the power radiated by a transmitter by a factor of 4 This MURS intercoms can transmit up to four miles, and perhaps also with an external antenna, depending on the terrain.

One advantage of the wireless FM radio is that the battery is almost always better than similar units UHF. For portable radios is a plus.

VHF equipment is usually a lower cost to the budget in one. The equipment can be cheaper than UHF products.

In summary, if youPlanning to use your radios in particular, inside buildings, then UHF is probably the best solution for you. If you are primarily using your radio for communication to the outside, then VHF would be a good choice. Both wireless technologies for you, if you have not really cover a long row. In this case, you can select FM for its low cost.