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Microphones
Audio Technica ATW-901A/H Frequency-agile VHF Wireless System
$259

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ATW-R900a receiver and ATW-T901a body-pack transmitter with PRO 8HEcW headworn microphone.
42005194896
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Description

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.

Features:

  • 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

Technical Specifications

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
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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