AZDEN IRB-20 Body-pack transmitter

The IRB-20 is a body-pack transmitter with IRE-20 emitter mic.
The IRB-20 operates for 5 hours on "AA" size alkaline batteries.

Modulation                     FM
Microphone type            Omini directional electrets condenser mic
Channel no                     2 Channel
Oscillation method        Crystal servo PLL synthesizer
Frequency response      50-10kHz±3dB 
Deviation                        Less than 2%
Power                            2 AA-size batteries 2.4-3v
Dimensions                   100(H)x64(W)x27(D)
Weight                            130g