Audio-Technica System 9 ATW-902A Wireless Handheld Microphone System

Specifications
Overall System
Operating Frequencies VHF highband, 169 MHz to 172 MHz
Modulation Mode FM
Maximum Deviation +/-10 kHz
Frequency Response 80 Hz to 13 kHz
Operating Range 200' (60 m) typical
Open range environment with no interfering signals
Total Harmonic Distortion <1% (at 1 kHz, +/-10 kHz deviation)
Operating Temperature Range 40° F (4° C) to 110° F (43° C)
Battery performance may be reduced at very low temperatures
Notes First-generation System 9 (original) components:
ATW-R900 receiver
ATW-T901 body-pack transmitter
ATW-T902 unidirectional dynamic microphone transmitter

Click here for the original System 9 Owner's Manual.

Handheld Transmitter
RF Power Output 10 mW
Spurious Emissions Following federal and national regulations
Battery Type 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
Accessories Included AT8456a Quiet-Flex™ stand clamp
Body Pack
RF Power Output 10 mW
Battery Life 8 hours (alkaline)
Depending on battery type and use pattern
Battery Type Two 1.5V AA
not included
Dimensions 2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) D
Input Connections Four-pin Locking Connector
Pin 1: GND
Pin 2: INST INPUT
Pin 3: MIC INPUT
Pin 4: DC BIAS +9V
Net Weight 2.8 oz (80.0 grams)
without batteries
Spurious Emissions Following federal and national regulations
Receiver
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)
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
Weight 12.0 oz (337 grams)
Accessories Included Power supply
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)