Audio-Technica's Freeway 200 Series Wireless Systems are designed to provide reliable performance, easy setup and clear, natural sound quality. Each 200 Series professional VHF wireless system includes a receiver and either a body-pack transmitter or a handheld microphone/transmitter on a specific crystal-controlled frequency. A novel dipole antenna system on the receiver improves operation by providing a ground element in addition to the usual signal element.
Features
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, ¼" 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 5 system configurations
ATW-251/L
ATW-R250 receiver, ATW-T201 transmitter and lavalier microphone.
Technical Info
Overall System Specifications
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° F (4° C) to 110° F (43° C)
Frequency Response: 80 Hz to 13 kHz
Receiver Specifications
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 dBµV 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
Body-pack Transmitter Specifications
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)
4 payments of 
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
