D2402 D2421 D2422 D2423 D2424 Two Channels UHF Wireless Conference Microphone S...

Audio range: 640-690 MHz

Modulation: Broadband FM

Available broadband: 25MHz

Quantity of channels: Automatic infrared frequency, 80 channels

Frequency stability: ±0. 005%

Dynamic range: > 110dB

Peak frequency offset: 45KHz

Audio response: 60HZ-18KHZ (±3dB)

Comprehensive signal-to-noise ratio: > 105dB

Comprehensive distortion: < 0. 5%

Receiver index: 

Receiver mode: secondary frequency conversion superheterodyne

IF Frequency: First-IF:110MHZ, Second IF: 10.7MHZ

Wireless interface: BNC

Sensitivity: 12dB (80dB S/N)

Squelch threshold: 0-4dBV

Spurs suppression: > 80dB

Audio output: Unbalanced: + 4dB (1.25 V)/5kΩ

Balance: +10dB (2.5 V)/6000Ω

Supply voltage: DC11-16V (rated12V)

Current: Single receiver, less than200mA; double receiver, less than 350mA

Transmitter Index: 

Output power: 30mW/3mW (HI/LO conversion)

Spurs suppression:-60dB

Power supply: AA x 2

Current: < 110 mA (HF) < 80WA (LF)

Service time (sealed battery): About 8 hours for high power transmission and about 12 hours for low power transmission.