J-280True diversity a second-hand hold

Product description

1. Digital large screen dual-channel independent design, one-key automatic frequency sweep function, automatic search working environment to lock the clean channel, effectively prevent interference with the same frequency.
2. Adopt dual-channel independent ID true diversity receiver with strong anti-interference and high stability.
3. Adopting PLL combination technology and digital pilot technology, easy to operate.
4. Large screen display, volume, channel RF frequency, work level receiving gear and other detailed and clear.
5. The channel system adopts electronic volume control, higher accuracy, very good to eliminate the resistance of potentiometer noise
6. Adopt audio compression technology circuit, with wide dynamic response, transparent analytical force and perfect sound quality effect.
7. Use high sensitivity microphone core, built-in suppression circuit, effectively reduce the microphone roar.
8. No switch impact sound to ensure the safety of the power amplifier and speaker at the rear stage.
9. Transmitter microphone and receiver are equipped with LIQUID crystal display, and the working state is clear at a glance.
10. Handheld support high and low power switching, use wide applicable degree.
11. The hand-held shell adopts the most advanced double-jointed design, with strong three-dimensional sense and comfortable feel
12. Handheld microphone with manual FM button, FM more convenient
13. The battery compartment is independently designed, making it more convenient and durable to take out and unload the battery.
14. The handheld adopts the boost circuit design, which effectively extends the battery life
15. The system adopts the knob electronic volume control, higher precision, eliminate the resistance of potentiometer noise.
16. Brushed metal panel, high-grade, atmospheric, simple functional operation;Panel with independent indicator light display, debugging more convenient.
Frequency range :640-690 MHZ
Modulation: FM frequency modulation
Number of channels: infrared automatic 200 channels
Frequency stability: ±0.001%
Dynamic range: & GT;100dB
Peak frequency offset: ±45KHz
Frequency response: 50HZ-18khz (±3dB)
Integrated signal-to-noise ratio :& GT;105dB
Comprehensive distortion :& LT;0.5%
Service distance: 200 meters
Receiver indicators:
Receiving mode: Secondary frequency superheterodyne,CPU automatically selects the strongest signal channel
Intermediate frequency: First intermediate frequency :110MHz, second intermediate frequency: 10.7mhz
Mode of oscillation :PLL phase locked loop
Antenna interface: BNC seat
Maximum channel number: 200
Bandwidth :100MHz
Sensitivity :12dB (80dBS/N)
Noise threshold: 0-40dB
Audio output: Hybrid: 0-600MV, balanced: 0-600MV
Power supply: DC 12 to 15 v
Transmitter:
Transmission power: 15 ~ 30mW
Stray suppression: -60dB
Harmonic suppression :& GT;55 DBC
Supply voltage: 3V/1.5V AA battery
Duration of use: 8 hours