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Wireless microphone - conference microphone u700d

     Qt-u700d professional wireless conference microphone adopts advanced digital phase-locked loop multi-channel frequency synthesis technology. Within 50MHz frequency bandwidth, with 250kHz channel interval, it provides up to 200 channel options, which is convenient for multiple sets of machines to use at the same time, with high frequency stability; multi-level narrow-band high-frequency filtering, fully eliminating interference signals. Traditional wireless microphones can't distinguish noise from human voice signal because they use low frequency noise circuit to analyze the strength of RF signal. When they are used in noisy RF environment (such as CD / VCD / LD mobile phone and other digital devices emitting a large number of harmonic signals), when the transmitter's signal is weak or off, the noise circuit may suddenly turn on and the receiver will send out Strong blasting noise. To solve this problem, the company designed this professional class wireless conference microphone. Multistage narrow-band high-frequency filtering adopts the noise digital suppression circuit of high-frequency transmission and reception, which analyzes the quality of the signal rather than the strength of the signal. When the transmission signal is strong, the noise sound level of the system is low, and the receiver lets the sound pass through. When the transmission signal is weak or there is no signal, the noise sound level high suppression circuit of the system will make the receiver muffle, which has eliminated the annoyingness The possibility of blasting noise through your receiver. Easy to avoid all kinds of interference, advanced automatic frequency matching technology even if the frequency of transmitter and receiver is disordered, you only need to press it lightly, the transmitter will automatically track the receiver frequency and adjust the same, easy to use.


Product picture





Product features


★ UHF high frequency band is adopted, which has less interference and more reliable transmission than the traditional VHF band

★ adopt digital phase-locked loop multi-channel frequency synthesis technology, provide up to 200 channel options within 50MHz frequency bandwidth with 250kHz channel interval, facilitate the simultaneous use of multiple sets of machines, and easily avoid all kinds of interference

★ advanced automatic frequency matching technology, even if the frequency of transmitter and receiver is disordered, you only need to press it lightly, the transmitter will automatically catch up with the frequency of receiver and adjust it to be consistent, easy to use

★ LCD is used to make the working state of receiver and transmitter clear at a glance


Specifications

Conference microphone transmitter

display

Backlit multi-function LCD

Send / receive settings

Channel / infrared sync

RF carrier range

470 – 932mhz, region dependent

Transmitting power

<10mW

RF tuning step

25 kHz, region dependent

Mirror frequency suppression

> 70dB (typical value)

RF sensitivity

-96dBm at 10-5BER

Signal delay

<2.6ms

Frequency Response

30Hz–20kHz(±1dB)

Audio dynamic range 

A-weighted (typical value), system gain @ + 10 > 120dB

Total harmonic distortion

- 12dB FS output, system gain @ + 10 < 0.1%

Audio polarity

The positive pressure on the diaphragm of the core will generate a positive voltage at the tip of the XLR output pins 2 and 6.35

power supply system

DC12~17DC,500mA~2000mA

Operating temperature range

-18℃(-0.4℉ to 50℃(122℉) 

Storage temperature range

-20℃(-4℉) to 60℃(140℉)

Applicable places

Conference room, command center, hotel, school, church, etc

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