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System Operating Frequencies
System Operating Frequencies
Each transmitter/receiver system operates on a choice of four switch-
selected frequencies. Available frequencies are shown below. All
frequencies may be combined for up to 4 simultaneous operating
channels.
Traveling frequencies normally work anywhere in the USA and Canada.
Not all frequencies available in all areas outside the US. Please check
with local regulations.
System 9 Operating Frequencies/Channels
Channel
Frequency – MHz
1
169.505
2
170.245
3
171.045
4
171.905
For future reference, please record your system information here. The serial number
appears inside the battery compartment in each transmitter, and on the bottom of each
receiver.
Receiver
Model ATW-R900
Transmitter
Model ATW-T90
Specifications
OvERALL SySTEm
Operating Frequencies
Modulation Mode
Maximum Deviation
Dynamic Range
Total Harmonic Distortion
Operating Range
Operating Temperature Range
Frequency Response
RECEIvER
Receiving System
Image Rejection
RF Sensitivity
Normal Output Level
XLR, balanced:
/
" (6.3 mm), unbalanced:
1
4
Power Supply
Dimensions
Net Weight
Accessory Included
Frequency Code
T2
T3
T5
T8
1 or 2
VHF highband, 169 MHz to 172 MHz
FM
±10 kHz
≥90 dB (A-weighted), typical
<1% (at 1 kHz, ±10 kHz deviation)
200' (60 m) typical
Open range environment with no interfering signals
40° F (4° C) to 110° F (43° C)
Battery performance may be reduced at
very low temperatures
80 Hz to 13 kHz
Non-diversity, single-channel,
dual antenna system
50 dB minimum
20 dBuV at 60 dB S/N ratio
(50 ohms termination)
350 mV (1 kHz modulation, 10 kHz
deviation, 100k ohm load)
700 mV (1 kHz modulation, 10 kHz
deviation, 100k ohm load)
100-240V AC (50/60 Hz) to 12V DC .5A
(center positive) switched mode external
power supply
7 .48" (190.0 mm) W x 1.82" (46.2 mm) H x
5.06" (128.5 mm) D
12.0 oz (337 grams)
Power supply
System 9 Installation and Operation
RF Interference
Please note that wireless frequencies are shared with other radio ser-
vices. According to Federal Communications Commission regulations,
"Wireless microphone operations are unprotected from interference
from other licensed operations within the band. If any interference is
received by any Government or non-Government operation, the wireless
microphone must cease operation... "
If you need assistance with operation or frequency selection, please
contact your dealer or the Audio Solutions at Audio-Technica U.S.
Extensive wireless information also is available on the A-T Web site at
www.audio-technica.com.
Serial Number
Serial Number
UnIPAk
TRAnSmITTER
®
RF Output Power
Spurious Emissions
Input Connection
4
3
1
2
Batteries (not included)
Battery Life
Dimensions
Net Weight (without batteries)
HAnDHELD TRAnSmITTER
RF Output Power
Spurious Emissions
Batteries (not included)
Battery Life
Dimensions
Net Weight (without batteries)
Accessory Included
In the interest of standards development, A.T.U.S. offers full details on its test methods to
†
other industry professionals on request.
10 mW
Following federal and national regulations
Four-pin Locking Connector
Pin 1: GND, Pin 2: INST INPUT,
Pin 3: MIC INPUT , Pin 4: DC BIAS +9V
Two 1.5V AA
8 hours (alkaline)
Depending on battery type and use pattern
2.76" (70.2 mm) W x 4.08" (103.7 mm) H
x 0.98" (24.9 mm) D
2.8 oz (80.0 grams)
10 mW
Following federal and national regulations
Two 1.5V AA
8 hours (alkaline)
Depending on battery type and use pattern
9.91" (251.8 mm) long,
2.11" (53.5 mm) diameter
9.2 oz (260 grams)
AT8456a Quiet-Flex
stand clamp
™
7
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