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Four Channel Wireless Microphone

Dec 27,2024

(1) First, the frequency configuration without intermodulation should be selected. Within the 50MHz bandwidth, 16 transmitters can be used at the same time. If more sets of wireless microphones need to be used, other frequency band models need to be configured.
(2) When multiple transmitters are used together, each transmitter shall be at least 20cm apart to avoid mutual interference.
(3) When multiple sets of receivers are used together, it is recommended to install a high gain antenna, antenna amplifier and receiver splitter at a distance of 150 meters
(4) If the transmitter is set at low power, 200 transmitters can be used in the same frequency band, such as KTV rooms and school classrooms.
System indicators:
Frequency range: 620-950MHz
Modulation mode: broadband FM
Adjustable range: 50MHz
Number of channels: 200
Channel interval: 250KHz
Frequency stability: within ± 0.005%
Dynamic range: 100dB
Maximum frequency offset: ± 45KHz
Audio response: 80Hz-18KHz (± 3dB)
Comprehensive signal-to-noise ratio:>105dB
Comprehensive distortion: ≤ 0.5%
Working temperature: - 10 ℃ -+40 ℃
Receiver index:
Receiver mode: secondary frequency conversion superheterodyne
IF frequency: first IF: 110MHz, second IF: 10.7MHz
Wireless interface: BNC/50 Ω
Sensitivity: 12 dB μ V (80dBS/N)
Sensitivity adjustment range: 12-32 dB μ V
Stray suppression: ≥ 75dB
Maximum output level:+10 dBV
Transmitter indicators:
Antenna program: 1/4 wavelength whip antenna is used for the attached transmitter, and a handheld microphone is used
Built in spiral antenna
Output power: high power 30mW; Low power 3mW
Stray suppression: - 60dB
Power supply: two AA batteries
Service time: more than 10 hours at 30mW, more than 15 hours at 3mW