Abstract: Systems and methods for harnessing energy from ocean tides use the rise in water level to lift a buoyant mass to an elevation and then use the weight of the mass to pressurize a working fluid, such as water, used to motivate a turbine generator to produce electricity. The extra weight of the buoyant mass pressurizes the working fluid to greater pressure and velocity than possible using only the static head of the tide.

Abstract: Embodiments of systems and methods provide deployable cellular telecommunication base stations capable of sending, receiving, and extending telephone calls in areas where commercial cellular communications are unavailable. The deployable base station can send and receive cellular telephone calls via cellular communication transceivers, and relay such calls to a distant teleport via a satellite communication link. The deployable base station includes routers for encoding voice calls in voice-over IP data format and for routing calls via the satellite communication link. The deployable base station may also include land mobile radio (LMR) communication interoperability circuits to enable LMR communications to be relayed to a distant teleport. At the teleport, received communications can be routed via a public switched telephone network to an intended receiver to enable telephone communications with the global commercial network from areas lacking commercial cellular communications.