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Brand: Audio Technica


(aka ATW-2129BI) – ATW-R2100a receiver and ATW-T210a UniPak transmitter with AT829cW lavalier microphone

SKU: ATW-2129AI Category:

Manufacturer’s website

Audio-Technicas second-generation 2000 Series is 10-channel frequency-agile UHF wireless system designed to suit variety of applications, including MI/live performance, fixed installation, public address, A/V rental houses and places of worship. It offers all the advantages of high-quality, professional wireless system at an extremely affordable price. New professional features include two available frequency bands and switchable antenna power.

Offering 10 selectable channels in one of two UHF frequency ranges and True Diversity UHF wireless technology, the 2000 Series features automatic frequency scanning. At the touch of button, this function automatically determines and sets the best available frequency. Any of the 2000 Series 10 channels may be used together without any frequency coordination problems or group selection issues. The 2000 Series also incorporates Audio-Technicas digital Tone Lock squelch plus an easy-to-read LCD information display.

– Serious advances in affordable professional wireless

– Clear sound quality and rock-solid, dependable performance

– Automatic frequency scanning

– 10 compatible user-switchable channels in one of two UHF frequency ranges

– Antenna power available for powered antennas other in-line RF devices

– True Diversity operation selects the better signal from the two receiver sections, reducing dropouts

– Tone Lock tone squelch system fights interference

– Rugged metal half-rack receiver with soft-touch controls and LCD display

– Balanced XLR and unbalanced 1/4 inchoutput jacks enable use with wide variety of audio gear

– Switchable transmitter power output with high and low settings offered

– Includes rack-mount kit and detachable UHF antennas

– Ground-lift switch helps eliminate audible hum caused by ground loops between the sound system and receiver

– ATW-T220a Handheld Microphone/Transmitter features PRO 41 Capsule for maximum feedback rejection and consistent sound


Operating Frequencies UHF
Band D: 656.125 to 678.500 MHz
Band : 487.125 to 506.500 MHz

Number of Channels 10 total

Modulation Mode FM

Maximum Deviation plus/minus 40 kHz

Dynamic Range greaterthan110 dB (A-weighted), typical

Total Harmonic Distortion less than1 pecent(at kHz, ?±20 kHz deviation)

Operating Range 100 (300 feet), typical
Open range environment with no interfering signals.

Operating Temperature Range 5 degreesC to 45 degreesC
41 degrees to 113 degreesF
Battery and LCD performance may be reduced at very low temperatures.

Frequency Response 100 Hz to 15 kHz (+1 dB, -3 dB)


Receiving System True diversity

Image Rejection 60 dB nominal, 55 dB minimum

RF Sensitivity 20 dBuV at 60 dB S/N ratio
(50 ohms termination)

Antenna Input BNC-type, 50 ohms
Bias voltage 12V DC, 60 mA, each

Power Requirements 12-18V DC, 500 mA

Dimensions 210.0 mm (8.27 inches) x
162.2 mm (6.39 inches) x
44.0 mm (1.73 inhes)
Not including BNC connectors or feet.

Net Weight 1.0 kg (35.3 oz), without accessories

Accessories Included Two flexible UHF antennas; AC adapter (country dependent); rack-mount adapters


Maximum Output Level:
XLR, balanced: +9 dBV
1/4 inches (6.3 mm), unbalanced: +4 dBV
Balanced Audio Output Attenuator:
Two position switch: / -12 dB


RF Power Output High: 30 mW; Low: 10 mW (switchable), at 50 ohms

Spurious Emissions Following federal and national regulations

Microphone Element Dynamic cardioid

Batteries Two 1.5V AA, not included

Battery Life High: hours (alkaline)
Low: hours (alkaline)
Depending on battery type and use pattern.

Dimensions 232.0 mm (9.13 inches) long,
48.0 mm (1.89 inches) diameter

Net Weight 252 (8.9 oz), without batteries

Accessory Included AT8456a Quiet-Flex stand clamp

Second-generation 2000 Series (a version) components:
ATW-R2100a receiver
ATW-T210a UniPak body-pack transmitter
ATW-T220a cardioid dynamic microphone/transmitter
Click here for version 2000 Series owners manual.

First-generation 2000 Series (original) components:
ATW-R2100 receiver
ATW-T210 UniPak body-pack transmitter
ATW-T220 cardioid dynamic microphone/transmitter
Click here for original 2000 Series owners manual.

Most users do not need license to operate this wireless microphone system. Nevertheless, operating this microphone system without license is subject to certain restrictions: the system may not cause harmful interference; it must operate at low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at

Weight 7 lbs


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