Audio Technica 200 Series Informations techniques

200 Series Pro fessionalVHF Wire less SystemsAT W-251 UniPak®Transmitter SystemAT W-251/G Guitar SystemAT W-251/H Headworn Microphone SystemAT W-251/H

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 330/686-2600 www.audio-technica.comP51858-01 ©2011 Audio-Technica U.S., Inc. Printed

Professional VHF Wire less SystemsInstallation and Operation2CAUTION! Electrical shock can result from removal ofthe receiver cover. Refer servicing t

Receiver Installation3LocationFor best operation the receiver should be at least 3' (1 m)above the ground and at least 3' (1 m) away from a

4Transmitter SetupBattery Selection and InstallationAn alkaline 9-volt battery is recommended. Make certain thetransmitter power switch is Off before

5Ten Tips To Obtain The Best ResultsSystem Operation1. Use only fresh alkaline batteries. Do not use “general purpose”(carbon-zinc) batteries.2. Posit

6System Operating FrequenciesFrequency SelectionEach transmitter/receiver system operates on a single factoryaligned, crystal-controlled frequency. Av

7Specifications†OVERALL SYSTEMOperating Frequency VHF high band, 169 MHz to 172 MHzFrequency Stability ±0.005%Modulation Mode FMMaximum Deviation ±15

Figure A (p. 3)AntennasFigure B - Front panel controls and functionsReceiver Controls and FunctionsFigure C - Rear panel controls and functions2 3 481

Transmitter Controls and FunctionsFigure D Figure EFigure FFigure GFigure HFigure I➞➞9Battery PolarityDiagramBattery-Save Switch(under screwdriver cli