XS-MP-4 VHF wireless system with 4 tie and 4 head microphones

System parameters  

Frequency range:............................ 180-270MHz (VHF)
Frequency stability:....................... +/- 0,005%
Modulation system:........................ FM

Maximum modulation range:........+-15KHz
Frequency response:......................40Hz - 20kHz
Signal to noise:................................>100dB

Dynamic range:................................>100dB
Distortion:.........................................< 0,5%
Operate range:.................................50m

Temperature:....................................-10 - 50 C

Receiver parameters

Receive system:................................ Quartz crystal locked frequency
Sensitivity:........................................ 60dB
S/N ratio:.......................................... >100dB
Unbalanced output:......................... CHA+B 0-0.5V/5KΩ
                                                    CHA & CHB 0-0.5V/50KΩ
Power voltage:................................... 110 or 220Vac
Power:.................................................. <15W

Transmitter (microphone)

High frequency output:.................... 30mW (max)
Higher harmonics:............................. >45dB
Antenna:............................................... Built-in
Cartridge directivity:....................... single
Battery:................................................ 2 X 1.5AA 
Nominal current:................................ 25mA
Battery time:...................................... More than 8 hours