Audio Technica ATW902A Wireless Handheld Microphone System

Audio-Technica's System 9 is a four-channel frequency-agile wireless system designed to provide rock-solid performance along with easy setup and clear, natural sound quality. Featuring sleek, stackable, contemporary styling, System 9 is available in handheld, headworn, guitar, lavalier and body-pack configurations. The system offers four compatible user-switchable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz).

Each System 9 configuration includes the ATW-R900a receiver and either a body-pack transmitter or handheld microphone/transmitter. The ATW-R900a is a non-diversity, single-channel receiver with advanced dipole antenna design for extended operating range, which improves operation by providing a ground element in addition to the usual signal element. The ATW-R900a also offers volume control along with AF Peak, RF and Power indicator lights.

• Easy operation and clear, natural sound quality
  
  • 4 selectable frequency-coordinated VHF channels
  
  
  • Balanced XLR and unbalanced 1/4" output jacks enable use with a wide variety of audio gear
  
  
  • Reliable performance and durable construction
  
  
  • Advanced dipole antenna system for extended operating range

OVERALL SYSTEM SPECIFICATIONS Operating Frequencies VHF highband, 169 MHz to 172 MHz Modulation Mode FM Maximum Deviation +/-10 kHz Dynamic Range >/=90 dB (A-weighted), typical Total Harmonic Distortion <1% (at 1 kHz, +/-10 kHz deviation) Operating Range 200' (60 m) typical Open range environment with no interfering signals Operating Temperature Range 40° F (4° C) to 110° F (43° C) Battery performance may be reduced at very low temperatures Frequency Response 80 Hz to 13 kHz Maximum Simultaneous Use (Recommended) 200' minimum RECEIVER SPECIFICATIONS
Receiving System	Non-diversity, single-channel, dual antenna system
Image Rejection	50 dB minimum
RF Sensitivity	20 dBuV at 60 dB S/N ratio (50 ohms termination)
Audio Output	Nominal Output Level XLR, balanced: 350 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load) 1/4" (6.3 mm), unbalanced: 700 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load)
Power Supply	100-240V AC (50/60 Hz) to 12V DC .5A (center positive) switched mode external power supply
Operating Temperature Range	40° F (4° C) to 110° F (43° C)
Dimensions	7.48" (190.0 mm) W x 1.82" (46.2 mm) H x 5.06" (128.5 mm) D
Net Weight	12.0 oz (337 grams)
Accessory Included	Power supply

BODY-PACK TRANSMITTER SPECIFICATIONS
RF Power Output	10 mW
Spurious Emissions	Following federal and national regulations
Input Connections	Four-pin Locking Connector Pin 1: GND Pin 2: INST INPUT Pin 3: MIC INPUT Pin 4: DC BIAS +9V
Batteries	Two 1.5V AA not included
Battery Life	8 hours (alkaline) Depending on battery type and use pattern
Dimensions	2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) D
Net Weight	2.8 oz (80.0 grams) without batteries

HANDHELD TRANSMITTER SPECIFICATIONS
RF Power Output	10 mW
Spurious Emissions	Following federal and national regulations
Batteries	Two 1.5V AA not included
Battery Life	8 hours (alkaline) Depending on battery type and use pattern
Dimensions	9.91" (251.8 mm) long, 2.11" (53.5 mm) diameter
Net Weight	9.2 oz (260 grams) without batteries
Accessory Included	AT8456a Quiet-Flex™ stand clamp

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First-generation System 9 (original) components:
ATW-R900 receiver
ATW-T901 body-pack transmitter
ATW-T902 unidirectional dynamic microphone transmitter