A wireless microphone system receives and transmits on a radio frequency or also known as operating frequency. The allocation and regulation of frequencies and bands vary from country to country. Aside from frequency that present in a UHF antenna, government agencies also specify other aspects of the equipment. This includes maximum deviation, allowable transmitter power, and spurious emissions among others. All these specifications vary from one band to the next and from one user to another.
VHF and UHF Antenna for your System
UHF and VHF regions has various bands that are utilized for various systems. But there are some regulatory, physical, and economic disparities between these two that needs to be noted. The main physical attributes of a UHF radio wave is the shorter length of antenna for a UHF wireless microphone system.
One consequence is lesser radio wave transmission both through air and non-metallic materials like human bodies and walls. As a result, there is less transmitting reach for radiated power. One more consequence is the higher amount of radio wave reflection by smaller-sized metal objects which results in more severe and frequent duo to multi-path.
Knowing the Regulations
The regulations for both users and for licensing are the same in the UHF and VHF bands, regulations for the material would allow two possible differences. In the case of FM signals in the UHF band, greater bandwidth is possible. This allows greater deviation for wider frequency scope, as well as wider dynamic range of audio signal.
Additionally, a transmitter power up to 250mv is possible. Lastly, the available radio spectrum for UHF wireless microphone system usage is eight times higher than those with a VHF. With this, there is a larger number for a wireless microphone system to be operated.
The effective higher deviation limits of a UHF are not used as this results in the reduction in the number of systems that is operated: the corresponding enhanced occupied bandwidth of every system utilizes more than the available frequency reach. At the same time, the use of improved transmitter power is not common as this results in a decreased battery life and mutual interference.
But for UHF systems that has less than the maximum limit of power and deviation, the capability of a higher number of simultaneous systems is an important benefit in specific applications. This is true since a UHF system could be used along with a VHF system.
The main economic difference of a UHF and VHF operation is that UHF equipment has higher cost. Usually, it is a lot more difficult and expensive to design and make UHF devices. This is the result of the behavior of short wavelength/high frequency radio signals. The current UHF system cost more than a VHF system. Such cost differential is applicable to cables, antennas, and other accessories and the basic receiver and transmitter.It is very evident that the use of UHF antenna has greatly change our lives today. If you want to upgrade your wireless microphone system, be sure that you opt for the best quality one. Click right here to know the other benefits of using a UHF or VHF antenna.