China China Wholesale Conference Room Speaker Factory – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie Manufacture and Factory

China Wholesale Conference Room Speaker Factory – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie

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We are experienced manufacturer. Wining the majority of the crucial certifications of its market for Wooden Speaker, China Speaker Manufacturer, Home Karaoke System, We welcome shoppers, enterprise associations and buddies from all areas of your environment to speak to us and request cooperation for mutual gains.

China Wholesale Conference Room Speaker Factory – 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

malfunction symptoms	Malfunction cause
No indication on receiver and transmitter	No power on transmitter, receiver power is not connected properly
The receiver has no RF signal	The receiver and transmitter frequency bands are different or out of the acceptable range
There is radio frequency signal, but no audio signal	The transmitter microphone is not connected or the receiver squelch is too deep
	Sound guidance circuit malfunction
	Setting silent mode
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
Audio signal distortion	Transmitter modulation frequency deviation is too large, receiver output electrical Level is too large
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.

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We consistently execute our spirit of ''Innovation bringing progress, Highly-quality ensuring subsistence, Administration advertising and marketing gain, Credit history attracting buyers for China Wholesale Conference Room Speaker Factory – Professional home karaoke KTV wireless microphone set wireless mic transmitter – Lingjie , The product will supply to all over the world, such as: US, Seychelles, Jamaica, Faced with the vitality of the global wave of economic integration, we are confident with our high-quality products and sincerely service to all our customers and wish we can cooperate with you to create a brilliant future.

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Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.

By Natalie from Croatia - 2017.08.15 12:36

The quality of the products is very good, especially in the details, can be seen that the company work actively to satisfy customer's interest, a nice supplier.

By Carol from Kuala Lumpur - 2017.09.30 16:36

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