Importance

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Abstract

There is disclosed a self-righting radio frequency tracking tag. In an embodiment, an inner-sphere containing a radio frequency tag is ballasted to maintain an optimal orientation of the radio frequency tag. An outer-sphere is adapted to encapsulate the inner-sphere and a lubricating liquid, whereby in use the inner-sphere freely rotates in the lubricating liquid within the outer-sphere. The lubricating liquid has a freezing temperature of −40° C., allowing the radio frequency tracking tag to be used in winter conditions. The radio frequency tracking tag can be encased in a synthetic mass, such as synthetic stone, to simulate stones as may be found on a riverbed, yet still allow the inner-sphere to freely rotate and keep the radio frequency tag optimally oriented.

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First Claim