ST-990 Multifunctional True Diversity Wireless Microphone

characteristic: 1. Adopt true diversity reception technology, with a maximum usage distance of 500-1500 meters With advanced digital ID pilot function, completely eliminate interference and frequency hopping. 3. It has the function of automatically searching for idle frequency points with one button, and the function of locking keys with one button 4. Built-in 12-level electronic volume, 3-band audio EQ equalization. 5. Built-in SQ reception sensitivity with 6-level selection, which can be called according to the on-site environment. 6. The receiver is equipped with a display of the amount of transmitting battery, which is universal for both hands and microphones 7. Transmit an OLCD to display the channel and battery power, and the battery flashes at a low voltage of 1.8V to automatically shut down 8. Equipped with a feedback howling suppression attenuation function, which can effectively reduce feedback howling 9. Suitable for long-distance places such as large squares and campus playgrounds.

Category：

Performance wireless microphone

Service hotline:

0750-7779797

Online message

Detailed introduction

System indicators:
Frequency range: 500-900MHz
Modulation method: broadband FM
Adjustable range: 50MHz
Number of channels: 200
Channel interval: 250KHz
Frequency stability: within ± 0.005%
Dynamic range:>100dB
Maximum frequency deviation: ± 45KHz
Audio response: 40Hz-18KHz (± 3dB)
Comprehensive signal-to-noise ratio:>110dB
Comprehensive distortion: ≤ 0.5%
Working temperature: - 10 ℃ -+55 ℃

Receiver index:
Receiver mode: secondary conversion superheterodyne
Input power: 5W
IF frequency: first IF: 110MHz, second IF: 10.7MHz
Wireless interface: BNC/50 Ω
Sensitivity: 12 dB μ V (80dBS/N)
Sensitivity adjustment range: 10-32dB μ V
Spurious suppression: ≥ 95dB
Maximum output level:+10 dBV

Transmitter indicators:
Antenna program: The mounted transmitter uses a 1/4 wavelength whip antenna and a handheld microphone
Built-in antenna
Output power: 20mW
Spurious suppression: - 60dB
Power supply: two AA batteries
Usage time: about 6-8 hours

Key words:

ST-990