Bandpass amplifier and receiver using bandpass amplifier
Communication device and communication method of underwater...
Communication system
Distributed underwater electromagnetic communication system
Electromagnetic/acoustic underwater communications system
Emergency positioning indicating radio buoy having a thermally i
Medium frequency mine communication system
Method of and system for communication between points along a fl
Method of creating an electric field for shark repellent
Methods and systems for wireless communication by magnetic...
Mine communication cable and method for use
Narrowband high temperature superconducting receiver for low...
Radio communication apparatus
Remote down-hole well telemetry
Through-the-earth radio
Through-the-earth radio
Two way communication system for water sports
Underwater communications system
Underwater communications system comprising relay transceiver
Underwater communications system with adaptable carrier...