Audio-Technica ATW-R900a System 9 VHF Receiver Component Only

The ATW-R900a from Audio-Technica is the basic System 9 non-diversity, single-channel wireless receiver unit that provides an extended operating range. It achieves this enhanced operation via an advanced dipole antenna design plus a ground element in addition to the usual signal element. It also comes equipped with a volume control along with AF Peak, RF, and Power indicator lights. It operates on 4 compatible user-switchable VHF channels (please see below for frequencies), and includes power supply.

System 9 from Audio-Technica

A 4-channel frequency-agile wireless system, the System 9 is available in handheld, headworn, guitar, lavalier and body-pack configurations (other components and configurations sold separately). The system offers 4 compatible user-switchable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz).

System 9 Features

• Easy operation and clear, natural sound quality
• 4 selectable frequency-coordinated VHF channels
• Balanced XLR and unbalanced ¼" output jacks enable use with a wide variety of audio gear
• Reliable performance and durable construction
• Advanced dipole antenna system for extended operating range

Specifications

• Receiver unit:
  • Receiving System: Non-diversity, single-channel, dual antenna system
  • Image Rejection: 50dB minimum
  • RF Sensitivity: 20dBuV @ 60dB S/N ratio (50Ω termination)
  • Normal Output Level:
    • XLR, balanced: 350mV (1kHz modulation, 10kHz deviation, 100kΩ load)
    • ¼" (6.3mm), unbalanced: 700mV (1kHz modulation, 10kHz deviation, 100kΩ load)
  • Power Supply: 100 - 240VAC (50 / 60Hz) to 12VDC, 0.5A, (center positive) switched mode external power supply
  • Dimensions (W x H x D): 7.48" x 1.82" x 5.06" (190.0 x 46.2 x 128.5mm)
  • Net Weight: 12.0oz. (337g)
• Overall System:
  • Operating Frequencies: VHF high band, 169MHz to 172MHz
  • Modulation Mode: FM
  • Maximum Deviation: +/-10kHz
  • Dynamic Range: 90dB (A-weighted), typical
  • Total Harmonic Distortion: less than 1% (@ 1kHz, +/-10kHz deviation)
  • Operating Range: 200ft (60m), typical, Note: open range environment with no interfering signals.
  • Operating Temperature Range: 40°F - 110°F (4°C - 43°C), Note: Battery performance may be reduced at very low temperatures.
  • Frequency Response: 80Hz - 13kHz
• Note: further information can be found within the "System 9 Installation and Operation Manual" located under the "Documentation" tab above.