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Help CenterJRLON DH-1800 U-band Wireless One-to-eight Conference Microphone
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JRLON DH-1800 U-band wireless one-to-eight conference microphone
Product features:
· The device adopts a unique aesthetic design. The host switch uses LED red light to display the operating status clearly.
· The LCD display provides clearer observation of the microphone usage data.
· This device has a unique GROUP frequency grouping function, providing quick and convenient installation support. It has 8 sets of stacked machines without interference frequencies, and can be accessed with one click. The same frequency band frequencies can be called for simultaneous use of 1-8 sets in the same venue, ensuring trouble-free stacking use.
· It uses the UHF band, which has less interference compared to the traditional VHF band, and offers more reliable transmission.
· DPLL digital phase-locked loop multi-channel frequency synthesis technology provides up to 200 channels within a 54.73 MHz frequency bandwidth, with a 270 KHz channel interval, facilitating the simultaneous use of multiple machines and easily avoiding various interferences.
· Advanced automatic frequency locking technology. Even if the transmitter and receiver frequencies are misaligned, you just need to press a button, and the transmitter will automatically lock onto the receiver frequency and adjust to be consistent, making it convenient to use.
· Wireless transmission system. The conference transmitter, waist-mounted transmitter, and handheld transmitter are all powered by two AA batteries. High alkaline batteries can provide a longer usage time (10 hours for high power, 15 hours for low power).
· The conference transmitter can be freely equipped with a 24CM gun-type ultra-short pole microphone tube, using a 14mm capacitor-coated gold microphone core, with an effective pickup distance of up to 50 cm.
· The handheld transmitter can be freely equipped with intelligent mute technology. The microphone will automatically mute within 3 seconds when it is not held by the hand (any direction, any angle placement is possible).
· Operating distance: Open space: 80-100 meters; Complex environment: 30-80 meters.
· This device has extremely high frequency stability and can be used for multiple stacked machines. It is an ideal choice for conference and speech occasions.
System technical parameter indicators:
System technical parameter indicators:
Frequency range: 610.000 - 669.900 MHz
Modulation method: Broadband FM
Adjustable range: 59.9 MHz
Number of channels: 200 (8 * 25)
Channel interval: 300 KHZ
Receiving method: CPU-controlled automatic selection
Frequency stability: ±0.005% or less
Dynamic range: 100 dB
Maximum frequency deviation: ±50 KHZ
Frequency response: 40Hz - 18 KHZ
Overall signal-to-noise ratio: >105 dB
Overall distortion: ≤0.5%
Operating temperature: -10℃ to 40℃
Transmitter specifications:
Antenna type: 1/4 wavelength whip antenna is used for conference and belt-mounted transmitters; the built-in spiral antenna is used for handheld microphones.
Output power: High power 30mW; Low power 3mW
Spurious suppression: -60dB
Power supply: 3 AA batteries
Operating time: More than 10 hours at 30mW, more than 15 hours at 3mW
Receiver specifications:
Receiver mode: Double-conversion superheterodyne
IF frequency: First IF: 110 MHz, Second IF: 10.7 MHz
Antenna interface: BNC/50Ω
Sensitivity: 12 dBμV (80dBS/N)
Sensitivity adjustment range: 12 - 32 dBμV
Spurious suppression: ≥ 75 dB
Maximum output level: +10 dBV
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