DF Main Unit (The receiver and the processor unit)
Central Display and Control Unit
Touchscreen Display and Control Unit
 

The Antanna Unit

The VU-360 VHF/UHF Direction Finder (DF) provides bearing information of Aircraft VHF/UHF transmission for the purpose of assisting in Air Traffic Control. The system operates in the Civil Aeronautical Band/Military Bandand the bearing information of arriving, departing, and en route aircraftis displayed remotely to a 19" Operator/Control Unit. The DF systemis comprised of the following major sub-assemblies
 
 

ANTENNA Wide aperture Sixteen (16) dipole element array Adjacent dipole pair sequential commutation Omni central antenna for system test Lightning protection Easily erected and commissioned Obstruction lights	PROCESSOR UNIT Signal conditioning circuitry Microprocessor controlled bearing calculations Microprocessor generated test signals Fourier analysis circuitry
ANTENNA COMMUTATION UNIT Soft switching, to reduce cross modulation Mounted at ground level for ease of maintenance Sixteen (16) connectorized co-axial switch cards forease of maintenance Unsampled dipoles terminated in 50 ohms	RECEIVER UNIT Three (3) stage superheterodyne phase matched receivers(dual) Frequency synthesizer module RF injection Test Module
CENTRAL CONTROL DISPLAY UNIT Full control capability of the system for the technician'suse Digital LED bearing display or PC-based touchscreen system Separate 121.5/243 MHz receivers Telephone line interface circuitry to/from OperatorControl Display Unit Voice communications link to Operator Control DisplayUnit BITE control Twenty (20) preprogrammed channels	POWER SUPPLY UNIT 86-264 VAC, 47-63Hz input regulated power supplymodules Over current and over voltage protection