V JS-409F wireless microphone (VHF)

Frequency range: VHF160 to 260MHz or500 to 870Mhz
debug mode: FM
channel number: 2CH
maximum frequency offset: + 18KHz
audio response: 40Hz ~ 15KHz + / - 3dB
frequency stability: sensitivity of + 0.005%
: < - 92dBm for 30dB s / N Ratio
harmonic interference, is more than or equal to 50dB
image interference, is more than or equal to 80dB
signal-to-noise ratio: > 90dB A-weighted
distortion degree: < 1% for 15KHz deviation
audio output: XLR-12dBV 1/4inch-18dBV
dynamic range: > 90dB
the RF output level: 10dBm
working temperature of the - 10 DEG C to + 40 DEG C