UHF Versus VHF – Which Two-way radio frequency is better?
There are two main formats for two-talkie. They are very high frequency (UHF) radio and Very High Frequency (VHF) radio. Neither band is intrinsically better than others. They have their advantages and disadvantages. Both formats are effective ways to communicate with another person. But how do you decide what your needs change? Let’s go over the main components of two frequencies to decide.
UHF radio operates between the frequencies of 300 MHz and 3000 MHz Until recently, it was not widespread. Now the UHF frequency for radio-GPS, Bluetooth, uses cordless phones, and WiFi.
There are more available channels with UHF in most populated areas UHF may be less likely that interference from other systems. If you are in an area where the population is thin, VHF should work for you in order. Not long ago, the FCC opened a new FM frequency called Murs, which has hitherto been used is not strong in many areas. It ’s more radius gp300 about Murs in the lower VHF band. If you are in an area where interference from other wireless devices could be a problem, UHF transmitters and receivers and be the best choice if you use a MURS radio FM. UHF is better at penetrating physical barriers such as walls, buildings and radius gp300 landscape. Anything that prevents a radio wave radio signal weakens. UHF reduced accordingly. Although they can not travel radius gp300 far, UHF radio waves can penetrate obstacles better than FM.
To clarify the Differences radius gp300 in the inland area, is under an radius gp300 excerpt from a brochure from a leading manufacturer of radio equipment in the expected range of one of their lines of portable VHF and UHF radio radius gp300
“Coverage estimates: At full power, line of sight, unobstructed range of approximately 4 + miles. Internal VHF coverage is approximately 270,000 sqm and 300,000 sqm on UHF. Wait about 20 plans in VHF and vertical coverage of up 30 floors in UHF. Note: the scope and coverage are estimates and are not guaranteed. ”
FM waves are not very well pass through walls, buildings and rugged landscape. Therefore, it is clear for the low VHF spectrum in these environments. This may not necessarily be a problem if the bandwidth is only needed a few hundred meters. You can also radius gp300 connect an external antenna to an internal VHF base station, reducing or eliminating this problem.
One of the downsides UHF, the FCC is that you get radius gp300 a license, necessary radius gp300 in this operation Frequencies. Although many frequencies in the VHF band also require a business license. If you have a radio in the VHF MURS frequencies may be operated without a license. UHF equipment is generally more expensive. The components must be improved and are expensive to build. This does not mean 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 to radius gp300 Radio can also be shorter than a comparable FM radio.
VHF radio operates between the frequencies of 30 MHz and 300 MHz FM radio, two way radios and television programs in this area.
Both UHF and VHF radio are so vulnerable to the line of view factors, but a bit ‘more VHF. The waves make it through the trees and the rugged landscape, but radius gp300 not as good as UHF frequencies do. However, if an FM band and UHF waves radius gp300 were in an area without obstacles, the transmission FM band had to travel almost twice as far. This makes it easier to spread over a VHF range. If mostly outdoors, an FM radio is probably the best choice, especially if you are using a base station inside and add an external antenna.
Since VHF for some time and was not to make it more complicated, the equipment is generally cheaper than similar devices than UHF. A disadvantage of this device may be its size. Since the frequency of the waves are bigger, Antenna must be greater.
VHF radios also have a smaller number of available frequencies. Interference with other wireless devices radius gp300 could be quite radius gp300, a problem. But the FCC recently, this is less a problem when it opened the MURS frequencies. The 150 MHz spectrum is a band of citizens, which is one of the services Murs. MURS stands for Multi-Use Radio Service. This service is designed for use in the United States and Canada. This is a low power, short-haul service in the VHF 150 MHz radio band frequencies. There are five channels of MURS frequencies with 38 privacy codes within each that are harvested only calls to the code. The FCC does not require users of products are licensed for Murs.
Murs can improve with a greater range or external antenna. Look for an antenna on top of your home or business, you can do it with MURS. Some manufacturers claim an external antenna, the antenna can actually increase radiated power from radius gp300, a transmitter by a factor of 4. This MURS intercoms can be up to four miles, and perhaps also with an external antenna according to the terrain.
One advantage is the VHF radio that the battery life is almost always better than radius gp300, comparable units UHF. This handheld is a plus.
VHF equipment cost is generally lower for those radius gp300, on a budget. The equipment can be less expensive than similar UHF.
In summary, if you are planning your Walkie-talkie, particularly inside buildings, then UHF is probably the best solution for you. If you are mainly using your radio to communicate, then VHF would be a good choice. Both wireless technology can work for you if you do not really have a wide range of cover. In this case, you should select VHF for its low cost.
David Onslow is the marketing director IntercomsOnline.com that specializes in the sale of two-way radio systems and intercoms for professional use. A See http://www.IntercomsOnline.com, VHF and UHF radios and telephones.
By: David Onlslow
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