China Wholesale Active Speaker System Manufacturers – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie
China Wholesale Active Speaker System Manufacturers – 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:
Related Product Guide:
As a way to ideal meet up with client's desires, all of our operations are strictly performed in line with our motto "High Top quality, Competitive Cost, Fast Service" for China Wholesale Active Speaker System Manufacturers – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie , The product will supply to all over the world, such as: Philippines, Surabaya, Senegal, Our company sticks to the principle of "high quality, reasonable price and timely delivery". We sincerely hope to establish good cooperative relationships with our new and old business partners from all parts of the world. We hope to work with you and serve you with our excellent goods and services. Welcome to join us!
By Eric from Mali - 2018.10.01 14:14
We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
By June from Georgia - 2018.09.29 13:24
