HED WMS A4
RF Carrier Frequency Range
(Available frequencies depend on the applicable regulations in the country where the system is used).
Effective Range
Audio Frequency Response
Receiver Audio Output Level : 25 KHz deviation, 400Hz tone
XLR connector: into 600 ohm load : 24mV
1/4 inch connector: into 3000 ohm load : 360mV
Modulation: FM; ±25KHz
RF Power Output: 10 mW
Dynamic Range: >100 dB
RF Sensitivity:-105dBm (S/N-12dB)
Image Rejection: 80 dB typical
Spurious Rejection: 60 dB typical
Ultimate Quieting: reference 25KHz deviation : -105dBm, A-weighted System Distortion: 1% total harmonic distortion, typical
Power Requirements:
A4 Transmitters: 2 x AA 1.5V Alkaline batteries
A4 Receiver: 12 -18 V DC(negative ground), 500mA
Battery Life: Approximately 9 hours (varies with battery type)
Operating Temperature Range: -20 to 49°C (-4 to 120°F)


