FEATURES, FUNCTIONS AND SPECIFICATIONS:
The MB+4 has been realized for specific use in the field of communications.
It has a high gain amplifier (35 dB) and a volume compressor which make it different to any conventional microphone used up to now.
The high controllable output level is able to fully modulate any type of transmitter.
It has an excellent timbre.
The 5 wires connection cable allows compatibility of TX RX switching with any type of transceiver.
• Impedance: 0 ÷ 5000 Ohm
• Frequency: 250 ÷ 3500 Hz
• Max. Output Level: -23 dB (0 dB = 1V/μB) 
• Power Supply: 9 Volt (standard battery 6LR61)
• Dimensions (LxWxH): 95 x 160 x 230 mm
• Weight: 1,05 Kg