A hand-held, airborne, or vehicle-based, direction-finding device for geolocation comprising a radio frequency emitter, an antennae, a transceiver, a user interface electrotechnical and electronic device, and a switching network, all for use in homeland defense and national security applications

'airborn':5 'antenna':22 'applic':45 'base':9 'compris':16 'defens':41 'devic':13,31 'direct':11 'direction-find':10 'electron':30 'electrotechn':28 'emitt':20 'find':12 'frequenc':19 'geoloc':15 'hand':3 'hand-held':2 'held':4 'homeland':40 'interfac':27 'nation':43 'network':35 'radio':18 'secur':44 'switch':34 'transceiv':24 'use':38 'user':26 'vehicl':8 'vehicle-bas':7

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