Audio-Technica ATW-2120b Handheld Transmitter Wireless System Overview:

The Audio Technica ATW-2120b wireless hand held radio microphone system consists of the Audio Technica ATW-R2100B radio mic receiver and the ATW-T220a hand held cardioid dynamic microphone.

Features:

• ATW-R2100b receiver
• ATW-T220a handheld cardioid dynamic microphone/transmitter
• Automatic frequency scanning
• Up to 10 user selectable channels available
• Tone Lock squelch function fights interference

Specifications:

Overall System

• Operating Frequencies UHF band: 656.125 678.500 MHz (D Band); 854.900 864.900 MHz (F Band); 487.125 506.500 MHz (I Band); 606.500 631.000 MHz (U Band)
• Number Of Channels 10 total
• Frequency Stability 0.005%, Phase Lock Loop frequency control
• Modulation Mode FM
• Frequency Response 100 Hz to 15,000 Hz
• Operating Range 100 m (300′) typical
• Operating Temperature Range 41 F (5 C) to 113 F (45 C)

Receiver

• Receiving System True Diversity
• Image Rejection 55 dB nominal, 50 dB minimum
• Signal-To-Noise Ratio >100 dB at 40kHz deviation (A-weighted), maximum modulation 40 kHz
• Sensitivity 20dBuV (S/N 60dB at 5 kHz deviation, IEC-weighted)
• Total Harmonic Distortion < 1% (at 1 kHz, 20 kHz deviation)
• Audio Output Attenuator (ATTN) Unbalanced: 25mV (100k ohms load), 1/4″ phone jack
• Balanced: 50mV (Attenuator; 0dB) 12.5mV (Attenuator; -12dB) at 1 kHz 5kHz deviation, 100k ohm load, XLRM-type
• Antenna Input BNC-type 50 Ohms Bias voltage 12V DC, 60mA each
• Dimensions 210 mm x 44 mm x 162.2 mm (W x H x D)
• Weight 1.0kg
• Accessories Included Two flexible UHF antennas, rack mount adapters, AC adapters

Handheld Transmitter

• RF Power Output High: 30mW; Low: 10mW, nominal
• Spurious Emissions According to National Regulations
• Microphone Element Dynamic, unidirectional
• Battery Type Two 1.5V AA alkaline or rechargeable AA NiMH (not included)
• Current Consumption 150 mA typical
• Battery Life Approximately 9 hours (low), 7 hours (high)
• Dimensions 229 mm long 53.5 mm maximum diameter
• Net Weight 221g
• Accessories Included AT8456a Quiet-Flex Stand Clamp