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).

System 9 configuration includes the ATW-R900 receiver and handheld microphone/transmitter. The ATW-R900 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-R900 also offers volume control along with AF Peak, RF and Power indicator lights.

MPN: ATW902A
UPC: 4961310141202

• 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
  
  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
  
• 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
  
  Mic 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