WIRELESS MICROPHONE –The fact is it does not have to be wireless. However, the wireless systems have the obvious advantage of freedom of movement.
Two most common wireless systems are VHF vs. UHF.
VHF stands for Very High Frequency, and UHF means Ultra High Frequency. In the United States, these systems operate on different bands or ranges:
- Low-Range VHF (49-108 MHz):
- 49 MHz: typically used by walkie-talkies, inexpensive microphones
- 72 MHz: assistive listening frequency
- 88-108 MHz: commercial FM radio broadcast range
- High-Range VHF (169-216 MHz):
- 169-172 MHz: traveling frequencies used for quality wireless microphones, subject to various interference for the wide public usage
- 174-216 MHz: VHF television channels, much less likely to be interfered
- Low-Range UHF (450-806 MHz)
- 450-536 MHz: pagers
- 470-806 MHz: UHF televisions and quality wireless microphones, rare to receive interference
- High-Range UHF (900-952 MHz): licensing required