A wirelessly locatable tag may include a first housing member defining an exterior surface of the wirelessly locatable tag and a frame member attached to the first housing member and defining a battery cavity configured to receive a button cell battery and an opening through the frame member. The wirelessly locatable tag may further include a circuit board positioned between the first housing member and the frame member, a battery connector coupled to the circuit board and comprising a deflectable arm extending into the battery cavity through the opening in the frame member, a second housing member removably coupled to the frame member, and a biasing member configured to bias the button cell battery into the battery cavity of the frame member and against the deflectable arm of the battery connector.

A beacon detection system which can locate a missing search subject includes: a beacon signal receiver; a location position detector; and a beacon detector. The detector is configured to detect a location of a broadcasting beacon signal associated with a personal device of a search subject within search data covering a geographic search area derived from a search for the search subject, the search data gathered by the beacon signal receiver and location position detector. A computer implemented method of determining a location of a search subject is also provided. The method determines at least a possible connection request from Wi-Fi signals in search data gathered by a Wi-Fi radio covering a geographic search area for a search subject and associated location information to locate the search subject.

A search and rescue drone system includes a buoyant body member, a frame attached to the buoyant body member for carrying a motor and propeller, and an electronic array including a camera, GPS, an EPIRB radio distress beacon, and a transmitter/receiver for remote control flying the drone and communicating with an operator. A laser guidance system may provide coordinates for landing near a swimmer in distress. The search and rescue drone may also be programmed to simply fly to the location of an electronic wearable device, like a bracelet, that is worn by a man overboard. In another embodiment, the search and rescue drone includes pivoting motor mounts, so that it can take off and land vertically with propellers rotating in a horizontal plane, and then the propellers may pivot to rotate in a vertical plane for propulsion across water similar to a fan boat with rescued people aboard.

A system and bent-pipe transponder component for determining a location of an individual or object in three dimensional space. The system includes a transmitter configured to transmit a first wireless electromagnetic signal at a first frequency and at least one transponder that is configured to responsively emit a second wireless electromagnetic signal having a second frequency that is frequency-shifted from the first frequency. An included receiver detecting the first and second wireless electromagnetic signals is configured to provide an output of location information for the at least one transponder. A bent-pipe transponder component may include a receiving antenna, an emitting antenna, and a frequency shift stage comprising an oscillator and a first mixer, with the frequency stage mixing a received first wireless electromagnetic signal with the output of the oscillator via the first mixer to produce the emitted second wireless electromagnetic signal.

A personal locator beacon system has a personal locator beacon and a biometrics monitor. The personal locator beacon includes a first microprocessor, a first global positioning subsystem coupled to the first microprocessor, a first low energy transceiver coupled to the first microprocessor, and a first low energy antennae coupled to the first low energy transceiver. The biometrics monitor includes a second microprocessor, a second low energy transceiver coupled to the second microprocessor, a second low energy antennae coupled to the second low energy transceiver, and one or more nanosensors.

A gateway device for controlling sensor network transmission frequency comprising: means to detect the gateway device location, transmission means arranged to at least transmit a beacon signal in the UHF band, characterized in that the gateway device is arranged to detect radio frequency band limitations associable with the detected location, and further sending beacon signal on 868/915 MHz frequency, or on 2.4 GHz frequency or other available ISM/SRD frequency if frequency band limitations associable with the gateway location are detected. Corresponding arrangement and method are also presented.

An avionics unit assembly for an aircraft includes an avionics unit such as an underwater locator device (ULD) having a transmitter configured to output a radio frequency pulse and a battery configured to power the device. The avionics unit assembly can further include a housing that encases the transmitter and the battery and includes a vent port for exhausting an emission from the housing during a failure of the avionics unit. The avionics unit assembly can further include one or more of a suppressor that filters the emission, a shield element that is resistant to chemical and/or thermal effects of the emission, and a bracket for mounting the avionics unit assembly to a surface. The suppressor can include a plurality of channels, where each channel includes at least one blind alley that can capture/filter a particulate component and/or a liquid component from the emission and/or break up the particulate component.

A device for locating lost objects using a digital assistant. The locating device is attached or tagged to a household object that is commonly lost or misplaced, such as a television remote or a set of keys. The locating device is Wi-Fi enabled and configured to pair with a digital assistant stored on a smart device, such as a smart phone, a computer, or a smart speaker. The locating device comprises a tracking component for communicating with the digital assistant. When a user audibly prompts the digital assistant to locate the tagged object, the digital assistant signals the tracking component to initiate an audible or visual signal from the locating device.

A system for appending an emergency call (e.g., E911) with a location is described herein. The system appends the emergency call to a public safety answering point (PSAP) with a location from which the E911 call occurred. A user equipment (UE), which places the emergency call, connects to the beacon via short-range communication and acquires the location from a beacon. The UE transmits the location to the PSAP via a telecommunications network.

Systems and methods for transferring electric power to an aircraft during flight. Power transfer to the receiver aircraft is effected by means of a donor aircraft using a wired electrical connection. The method for transferring electric power includes: establishing an electrical connection between a receiver aircraft and a donor aircraft during flight; and transferring electric power from the donor aircraft to the receiver aircraft via the electrical connection. In one embodiment, electric power is transferred by way of a power cable deployed by the donor aircraft, a drogue attached to a trailing end of the power cable, and a probe mounted to the fuselage of the receiver aircraft, The probe and drogue are configured to form an electrical connection when fully engaged.