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Audio-Technica ATW-251/L Freeway VHF Wireless Lavalier System

Catalog Number: ATW-251/L

Price: $159.95

Out of Stock

This item is not in stock. You may order it in any quantity and we will send it as soon as it arrives from the publisher. Backorders average 1-2 weeks, but may take longer in the case of imports, items from small publishers, and temporarily out of print titles.

Audio-Technica’s Freeway® 200 Series Wireless Systems are designed to provide reliable performance, easy setup and clear, natural sound quality. Available in handheld, headworn, guitar, lavalier and body-pack configurations, the 200 Series Freeway Wireless Systems are single-channel, fixed-frequency systems available in three VHF frequencies (169.505, 170.245, and 171.905 MHz).

Each 200 Series Freeway Wireless System includes the ATW-R250 receiver and either a body-pack transmitter or handheld microphone/ transmitter. The ATW-R250 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-R250 also offers volume control along with AF Peak, RF and Power indicator lights.

  • Easy operation and clear, natural sound quality
  • Reliable performance and durable construction
  • Advanced dipole antenna system for extended operating range
  • Power, RF, and AF Peak indicators
  • Volume control, 1/4" output jack and space-saving power supply
  • Rugged unidirectional dynamic element on handheld microphone/transmitter
  • Variable microphone trim control and easily accessible On/Standby/Off switch on transmitters
  • Professional locking connector on UniPak® body-pack transmitter
  • Available in 7 system configurations

ATW-R250 receiver, ATW-T201 transmitter and omnidirectional lavalier microphone.



Operating Frequency VHF high band, 169 MHz to 172 MHz

Number of Channels Fixed channel

Frequency Stability +/-0.005%

Modulation Mode FM

Maximum Deviation +/-15 kHz

Operating Range 200' typical

Operating Temperature Range 40 degrees F (4 degrees C) to 110 degrees F (43 degrees C)

Frequency Response 80 Hz to 13 kHz


Receiving System Non-diversity, single-channel, dual antenna system

Image Rejection 50 dB minimum

Signal-to-noise Ratio 80 dB at 10 kHz deviation (IEC-weighted), maximum modulation 15 kHz

Total Harmonic Distortion <=1% (10 kHz deviation at 1 kHz)

Sensitivity 20 dB[mu]V for 60 dB S/N (IEC-weighted)

Audio Output 350 mV (1 kHz modulation, 10 kHz deviation, 100 k ohm load)

Output Connector 1/4" TS ("mono") phone jack

Power Supply 100-240V AC (50/60 Hz) to 12V DC 1A (center positive) switched mode external power supply

Dimensions 7.48" (190.0 mm) W x
1.65" (42.0 mm) H x
5.12" (130.0 mm) D

Net Weight 11.0 oz (311 g)

Accessory Included Power supply


RF Power Output 10 mW High position, 2 mW Low position, typical

Spurious Emissions Under federal regulations

Dynamic Range >=90 dB, A-weighted

Input Connections High impedance, low impedance, bias

Battery 9V (NEDA type 1604) alkaline, not included

Current Consumption 30 mA typical

Battery Life Approximately 15 hours in High position;
Approximately 20 hours in Low position
(depending on battery type and use pattern)

Dimensions 2.56" (65.0 mm) W x
4.33" (110.0 mm) H x
1.00" (25.4 mm) D

Net Weight 2.8 oz (78 g) (without battery)

Model: ATW-251/L
Manufacturer: audio-technica