MEASUREMENT DEVICE AND ASSOCIATED METHOD FOR USE IN FREQUENCY SELECTION FOR INGROUND TRANSMISSION

A portable device and associated method are described for use with a system in which a locating signal is transmitted from within the ground during an operational procedure. The locating signal includes a transmission frequency that is selectable from a group of discrete transmission frequencies in...

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Bibliographische Detailangaben
Hauptverfasser:	Lam, Loc Viet, Chau, Albert W
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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