U-6880 WIRELESS MICROPHONE

Application:

Description:

1. Adopt digital pilot frequency and ID code identity authentication technology 2. Using phase-locked loop PLL frequency synthesis stabilization system, providing 200 channels 3. Use the latest high-frequency filter to filter out-of-band interference signals to the maximum extent 4. The high-frequency circuit design with double frequency conversion has extremely high sensitivity 5. Multiple squelch control circuits, reject external interference and receive distances up to 250 meters. 6. The specially designed voice compression and expansion circuit greatly improves the signal-to-noise ratio 7. Unique circuit design, large dynamic, wide frequency response, low noise

Specifications:

RF range: 635.05-695.05MHz (A channel: 635-665, B channel: 665-695)
Usable bandwidth: 30MHz per channel (60MHz in total)
Modulation method: FM frequency modulation
Number of channels: 300 channels of infrared automatic linking
Operating temperature: minus 18 degrees Celsius to 50 degrees Celsius
Squelch method: automatic noise detection and digital ID code squelch
Offset degree: 45KHz
Dynamic range: >110dB
Audio response: 60Hz-18KHz
Comprehensive signal-to-noise ratio: >105dB
Comprehensive distortion: <0.5%

Receiver index:
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 specifications:
Oscillation mode: PLL phase locked loop
Output power: 3dBm-10dBm (LO/HI conversion)
Battery: 2 "1.5V No. 5" batteries
Current: <100mA(HF), <80mA(LF)
Use time (alkaline battery): about 8 hours at high power, about 12 hours at low power