VHF UHF fight - two-way radio frequency is best?

Added: 24-09-2005
Author: David Onlslow
Category: Radios

There are two formats for the two-way radio. They are Ultra High Frequency (UHF) radio and Very High Frequency (VHF) radio. Frequency is not inherently better than others. They are all pluses and minuses. The format is an effective way to communicate with one another. But how do you decide which one will suit your needs? Let us important aspects of all frequencies to help you decide.

UHF Radio

UHF equipment working between the frequency of 300 MHz and 3000 MHz. Until now, it wasn t very used. Now, UHF radio frequencies used by GPS, Bluetooth, cordless phones, and WiFi.

There are more channels available for UHF UHF so residents in these areas may be more likely to have less interference from other systems. If you are in regions where the weak, VHP should work well for you. Not too long ago the FCC also opened a new VHF frequencies, called URS has so far not been used in many areas. There's more about URS down on VHF. If you are in areas where interference from other radio may be a problem, UHF transmitter and receiver can be the best option unless you use a VHF radio URS. UHF is better through physical barriers such as walls, buildings and landscape rude. Nothing is blocking the radio waves will be weak radio signal. UHF reduce that effect. Although not able to go as far, UHF radio waves will penetrate obstacles better than VHF.

Show differences in the indoor range, below Excerpt from the brochure of the leading two-way radio makers are expected to range one of their lines ndheld VHF and UHF two-way radio:

Estimated coverage: At full strength, the line-of-sight, no obstructions in the range of about 4 + miles. Indoor coverage at VHF is around 270.000 to 300.000 square feet square feet at UHF. Expect about 20 floors in the VHF and vertical coverage of up to 30 floors at UHF. Note: Range and coverage are approximate and not guaranteed.

VHF waves are not clever pass through walls, buildings and harsh environments. Which will be reduced significantly different from VHF radio in this environment. Which may not always be a problem if the range is needed only a few hundred meters. You can also add an external Antenna Indoor VHF Base Station that will reduce or eliminate this problem.

One of the disadvantages of UHF is that the FCC should get a license to run this frequency. Although many VHF frequency bands also require a business license. If you choose URS VHF radio frequencies you can operate without a license. UHF equipment is usually more expensive. Components need to be set to small cells is more expensive to build. This does not mean that it's better just to be more expensive.

One advantage of UHF transmission is physically short wave generated by high frequency. This means that the radio antenna could be shorter than the same VHF radio.

VHF Radio

VHF equipment working between the frequency of 30 MHz and 300 MHz. FM radio, two way radio, and television work in this range.

All UHF and VHF radios vulnerable to the elements lead, but less so than VHF. Waves do it through the trees and rough theme, but not like for UHF frequencies. However, like the waves VHF and UHF waves in the sexual area without barriers, then the VHF wave would travel nearly two times as now. This makes simple VHF announcements in the long run. If you work more, and VHF radio is probably the best option, especially if you use a radio station in the main room and you add an external antenna.

Because the VHP has been almost completed and ISN t as difficult to do, usually cheaper materials than the same UHF equipment. One disadvantage of this material may be their size. Because of the high frequency waves, antennas must be large.

VHF radio also has a small number of available frequencies. Other radio interference may be more problems. However, recently made this issue under the FCC when they open until Urs frequency. The frequency is 150 MHz Citizens Band radio spectrum known as URS services. URS stands for Multi-Use Radio Service. This is for the use of the U.S. and Canada. Nature is a powerful, short service in the VHF 150 MHz Citizens Band radio spectrum. There are 5 private channel in URS frequencies below 38 individual codes, which allows you to just take the conversation about your code. The FCC does not require users to have a license URS products.

URS and you can add or increase coverage of foreign antenna. If you want to place the antenna in your home or business, you can do with URS. Some antenna manufacturers claim outside antenna can increase the efficiency and the power emitted by the transmitter 4. URS intercoms can transmit up to four miles, and perhaps more dependent on external antenna Themes.

One advantage of the wireless VHF radio battery life is almost always better than UHF equivalent units. In this radio ndheld plus.

VHF equipment size is to reduce the costs to those budgeted. Equipment can be more economical than similar products UHF.

In summary, if you plan to use two-way radio, particularly in the buildings, then UHF is probably the best solution for you. Especially if you use two-way radio communication to the outside, then VHF would be the best choice. Radio technology can also work for you if you don t really have a long range cover. In case you may want to choose VHF costs.

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