Four channel receiver

Frequency range: 640-690mhz. Modulation mode: Broadband FM, adjustable range: 50MHz

Channel number: 200, channel interval: 250kHz, frequency stability: ± 0.005%

Dynamic range: 100dB. Audio response: 80Hz-18KHz (± 3dB)

Comprehensive SNR: > 105dB. Comprehensive distortion: ≤ 0.5%. Working temperature: - 10 ℃ - + 40 ℃. Receiver index blocks all interference

Receiver mode: secondary frequency conversion superheterodyne. If frequency: first if: 110Mhz. Second if: 10.7MHz

Wireless interface: BNC / 50 Ω. Sensitivity: 12 dbv (80dbs / N). Sensitivity adjustment range: 12-32 dbv

Spurious suppression: ≥ 75db. Maximum output level: + 10 dbv transmitter index:

Antenna program: 1 / 4 wavelength whiplash antenna is used for the wearer transmitter, and spiral antenna is built into the conference microphone

Output power: high power 30MW; low power 3MW

Spurious suppression: - 60dB. Power supply: two AA batteries. Service time: more than 10 hours at 30MW, more than 15 hours at 3MW. Working range under normal conditions: no less than 30m