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USB Recording Microphone
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Studio Condenser Microphone
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UHF Wireless Microphone
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Conference Microphone System
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Wired Conference System
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Wireless Conferencing System
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Infrared Conference System
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Simultaneous Interpretation System
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Desktop Gooseneck Microphone
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Wireless Mic Antenna
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Conference Room Equipments
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600 Frequencies Dual Channel Wireless Microphone System 120MHz Transmitter Sync

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xOperating Range | 100 M | Oscillation | PLL |
---|---|---|---|
Sensitivity | 6dBμV, S/N>60dB At 25 Deviation | Band Width | 30MHz |
S/N | >105dB | T.H.D. | <0.7% @ 1KHz |
High Light | 600 Frequencies dual wireless mic system,120MHz Transmitter Wireless Microphone System,Dual Channel Wireless Microphone System 120MHz |
600 Selectable Frequencies Wireless Microphone System Transmitter Sync Matching
Receiver Parameter
Main Frame Size | EIA-Standard 19" 1U |
Channels | Dual Channel |
Frequency Stability | ±0.005%, Phase Lock Loop frequency control |
Carrier Frequency Range | UHF 510-937 MHz ( country dependent ) |
Preset Channels | 32 preset channels |
Operating Range | 90M typical ( in open space) |
Oscillation | PLL synthesized |
Sensitivity | 6dBμV, S/N>60dB at 25 deviation |
Band Width | 30MHz |
Max. Deviation Range | ±45KHz |
S/N | >105dB |
T.H.D. | <0.7% @ 1KHz |
Frequency response | 45Hz~18KHz±1dB |
Squelch | “PiloTone & NoiseLock” dual-squelch circuit |
Power Supply | 100-240V/AC50/60 Hz, 10W |
Weight | 2KG |
Dimension | 482(W) X 454(H) X 186(D) (mm) |
Output Connector | XLR balanced & 6.3φ phone jack unbalanced |
Transmitter Parameter (Handheld)
Carrier Frequency Range | UHF 510-937 MHz ( country dependent ) |
Oscillation | PLL synthesized |
Harmonic radiation | <-63dBm |
Bandwidth | 120MHz |
Max. Deviation Range | ±45KHz |
Input Connector | 4-pin mini-XLR connector |
RF Power Output | 3~30mW ( country dependent ) |
Battery | AA X 1 alkaline |
Current Consumption | 60mA, typical |
Battery Current / Life | Min. 5 hours |
Dimension | 72(H) X 68(W) X 21(D) (mm) |
Weight | 71g ( w/o battery) |
Receiver Features
· Rugged metal chassis with soft-touch controls.
· Advanced diversity technology maintains dependable wireless signal quality.
· Pilot tone squelch for eliminating RF interference when transmitter is turned off.
· Enhanced AF frequency range
· Built-in spectrum analyzer to scan and display interference frequency clearly.
· Transmitter Sync.
· 600 selectable frequencies across 30MHz bandwidth.
· OLED display screen delivers a bright, clear viewing in day/night environments.
· Equipped with both XLR balanced and Ø6.3mm unbalanced outputs.
· Offers an exceptional value in both performance and price, for both working musicians and sound installers
Transmitter Features
· Rugged, ergonomically designed housing.
· 120MHz ultra-wide bandwidth.
· Equipped with 4 pin mini XLR connector.
· Infrared automatic transmitter sync.
· Very easy and quick to use thanks to OLED display
· 1 x AA batteries – up to 5 hours continue use.
Products Supply Scope
. Handheld system: 1* AM 300 receiver + 2* AH 300 handheld microphones
. Lavalier system: 1* AM 300 receiver + 2* AP 300 bodypack transmitters with lavalier microphone
. Headset system: 1* AM 300 receiver + 2* AP 300 bodypack transmitters with headset microphone
. 1 power supply unit
. 2 antennas
. 1 ¼” (6.3 mm) audio connecting cable
. 4 AA size batteries ( handheld system ) / 2 AA size batteries ( lavalier / headset system )
. Operating instructions.
Application
Suitable for Large-scale performances ,small and medium-sized performances, outdoor singing and speeches, KTV boxes, classrooms, gymnasiums, offices and government agencies

A certain permanent charge (q) is injected into the polymer polarization film during production. Since there is no discharge circuit, the amount of charge is constant. Under the action of sound wave, the polarization film vibrates with the sound, so the distance from the back electrode also changes, that is, the capacitance between the locking polarization film and the back electrode changes with the sound wave. We know that the formula for the charge on the capacitor is q = C & MES; 5. On the contrary, v = q / C is also true. The total charge of the electret is constant. When the plate retreats under the acoustic pressure, the capacitance decreases and the voltage between the two poles of the capacitor will increase inversely.On the contrary, when the capacitance increases, the voltage between the two poles of the capacitor will decrease inversely. Finally, take out the voltage at both ends of the capacitor through the field effect with very high impedance and amplify it at the same time, and we can get the voltage corresponding to the sound. As FET is an active device, it needs a certain bias and current to work in the amplification state. Therefore, electret microphones need to add a DC bias to work.