China Wholesale Active Outdoor Speakers Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie
China Wholesale Active Outdoor Speakers Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie Detail:
System indicators
Radio frequency range: 645.05-695.05MHz (A channel: 645-665, B channel: 665-695)
Usable bandwidth: 30MHz per channel (60MHz in total)
Modulation method: FM frequency modulation Channel number: infrared automatic frequency matching 200 channels
Operating temperature: minus 18 degrees Celsius to 50 degrees Celsius
Squelch method: automatic noise detection and digital ID code squelch
Offset: 45KHz
Dynamic range: >110dB
Audio response: 60Hz-18KHz
Comprehensive signal-to-noise ratio: >105dB
Comprehensive distortion: <0.5%
Receiver indicators:
Receiving mode: double-conversion superheterodyne, dual-tuning true diversity reception
Oscillation mode: PLL phase locked loop
Intermediate frequency: the first intermediate frequency: 110MHz,
The second intermediate frequency: 10.7MHz
Antenna interface: TNC seat
Display mode: LCD
Sensitivity: -100dBm (40dB S/N)
Spurious suppression: >80dB
Audio output:
Unbalanced: +4dB(1.25V)/5KΩ
Balance: +10dB(1.5V)/600Ω
Power supply voltage: DC12V
Power supply current: 450mA
Transmitter indicators: (908 launch)
Oscillation mode: PLL phase locked loop
Output power: 3dBm-10dBm (LO/HI conversion)
Batteries: 2x“1.5V No. 5”batteries
Current: <100mA(HF), <80mA(LF)
Use time (alkaline battery): about 8 hours at high power
Simple malfunction treatment
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malfunction symptoms |
Malfunction cause |
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No indication on receiver and transmitter |
No power on transmitter, receiver power is not connected properly |
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The receiver has no RF signal |
The receiver and transmitter frequency bands are different or out of the acceptable range |
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There is radio frequency signal, but no audio signal |
The transmitter microphone is not connected or the receiver squelch is too deep |
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Sound guidance circuit malfunction |
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Setting silent mode |
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Audio signal background noise is too large |
Transmit modulation frequency deviation is too small, receive output electrical Level is low, Or there is an interference signal |
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Audio signal distortion |
Transmitter modulation frequency deviation is too large, receiver output electrical Level is too large |
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The use distance is short, the signal is unstable |
The transmitter setting power is low, and the receiver squelch is too deep. Improper setting of receiver antenna and strong battery interference around. |
Product detail pictures:
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We'll make every effort and hard work being outstanding and excellent, and speed up our techniques for standing during the rank of global top-grade and high-tech enterprises for China Wholesale Active Outdoor Speakers Factories – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie , The product will supply to all over the world, such as: United States, Naples, Chicago, Based on products with high quality, competitive price, and our full range service, we have accumulated professional strength and experience, and we have built up a very good reputation in the field. Along with the continuous development, we commit ourselves not only to the Chinese domestic business but also the international market. May you moved by our high quality products and passionate service. Let's open a new chapter of mutual benefit and double win.
By Michelle from Myanmar - 2018.07.12 12:19
The customer service reprersentative explained very detailed, service attitude is very good, reply is very timely and comprehensive, a happy communication! We hope to have a opportunity to cooperate.
By Janet from Provence - 2018.12.10 19:03
