How American customers choose the frequency of wireless microphone
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- Issue Time
- Feb 14,2023
Summary
According to the U.S. FCC regulations the U.S. prohibits the use of wireless microphones in the bands 617-652 MHz, 663-698 MHz, 698 - 806 MHz, etc.
How American customers choose the frequency of wireless microphone
Microphone frequency response is the microphone's response to frequency. More specifically, the specific sensitivity of a microphone to sound frequencies, which specifies the relative output levels of sound/audio frequencies that the microphone is capable of reproducing, is the most important factor in determining the sound characteristics of a microphone. Therefore, the choice of frequency is very important when purchasing a wireless microphone.
Wireless microphones are generally divided into three frequency bands, FM band, VHF band, and UHF band. The wireless microphones that Sinbosen mainly sells are UHF. The UHF frequency band refers to the 300~3000MHz frequency band. Wireless microphones generally use the 400~830MHz frequency band. The wavelength is longer, the transmission distance is longer, and there are few devices in the frequency band. Basically, there is no other external frequency that can interfere with such a high frequency, which is safe. Higher performance.
Radio waves in the UHF (300~3000MHz) frequency band are often used in the field of broadcasting and television. However, in recent years, the US FCC has restricted the frequency band of wireless microphones. Spectrum in the 617-652 MHz and 663-698 MHz bands is being repurposed for wireless licensees, according to documents released by the FCC. 698 - 806 MHz is repurposed for wireless broadband and public safety services. Therefore, the use, manufacture, import, sale, lease, offer for sale or lease, or transportation of wireless microphones for use in the 700 MHz band is prohibited by the FCC. Therefore, if you use or buy a wireless microphone in the United States, it is best to choose a frequency band of 500MHz, otherwise it may affect the use of the wireless microphone.
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ATX220D
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SKM9000
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Applications: Karaoke, Live Vocals Microphone Type: Dynamic/Condenser Polar Pattern: Cardioid Form Factor: Handheld Frequency: 780-820mhz / 615-655mhz With 4 Antennas, good signal Transmitting distance:400meters Includes Adapter, output line and manual Clear and present sound |
Applications: Karaoke, Live Vocals Microphone Type: Dynamic/Condenser Polar Pattern: Cardioid Form Factor: Handheld Frequency: 780-820 / 615-655 / 513-558mhz With 4 Antennas, good signal Transmitting distance:100meters Includes Adapter, output line and manual Clear and present sound |
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SKM 9000 ideal environment for operating radius of 100 meters, used in a variety of high demand occasions
Sinbosen AXT220D true diversity digital wireless microphone.
Good performance, Working effective distance 400 meters.
QLXD4 delivers clean audio and provides professional features for demanding live sound events and installations.