Partyline: SMQ-1 Que-Com Single Ear Headset/Beltpack Combination
The SMQ-1 is the current single muff Que-Com version.Technical Specifications: 
Amplifier Type
Solid state, IC amplifiers, current-limited with reverse-polarity and short-circuit protection
Signal-to-noise Ratio
65 dB
Distortion
<0.5% THD @ 1 kHz
MIC Pre-amp Frequency Response
200 Hz - 10 kHz, contoured for enhanced vocal intelligibility
Microphone Type
Dynamic, noise-rejecting
Headphone Frequency Response
200 Hz - 12 kHz
Sound Pressure Level
110 dB SPL max
Controls & Connector
Mic on/off switch and headphone volume control; cable terminates in female XLR 3-pin connector
Power Requirements
Talk: 10 mA average
Voltage Range: 12-32 VDC
Headset Weight
8.5 oz (0.24 kg)
Beltpack Dimensions
1" H x 3.5" W x 1.5" D (25 x 89 x 38 mm)
Amplifier TypeSolid state, IC amplifiers, current-limited with reverse-polarity and short-circuit protection
Signal-to-noise Ratio
65 dB
Distortion
<0.5% THD @ 1 kHz
MIC Pre-amp Frequency Response
200 Hz - 10 kHz, contoured for enhanced vocal intelligibility
Microphone Type
Dynamic, noise-rejecting
Headphone Frequency Response
200 Hz - 12 kHz
Sound Pressure Level
110 dB SPL max
Controls & Connector
Mic on/off switch and headphone volume control; cable terminates in female XLR 3-pin connector
Power Requirements
Talk: 10 mA average
Voltage Range: 12-32 VDC
Headset Weight
8.5 oz (0.24 kg)
Beltpack Dimensions
1" H x 3.5" W x 1.5" D (25 x 89 x 38 mm)
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