An electrochemical gas sensor (10) includes a housing (20) and with at least one electrode (21, 22). The housing (20) has a gas inlet (23). An at least strongly acidic, liquid electrolyte (30) is present in the gas sensor (10). The electrolyte (30) partly wets the electrode (21, 22). Provisions are made in such a gas sensor (10) for the electrolyte (30) to contain an additive that contains at least one surfactant. An electrolyte (30) is also provided for a gas sensor (10), which electrolyte (30) contains at least one surfactant as an additive.

A portable countermeasure device is provided comprising one or more directional antennae, one or more disruption components and at least one activator. The portable countermeasure device further comprises a body having a dual-grip configuration, with the directional antennae are affixed to a front portion of the body. The one or more disruption components may be internally mounted within the device body. The dual-grip configuration allows an operator to use his body to steady and support the device while maintaining the antenna on target. The second grip is positioned adjacent the first grip, with the first grip angled toward the rear of the device and the second grip angled toward the front of the device. The portable countermeasure device is aimed at a specific drone, the activator is engaged, and disruptive signals are directed toward the drone, disrupting the control, navigation, and other signals to and from the drone.

Methods and systems for network jamming detection and remediation are provided. Exemplary methods include: detecting by a base unit network jamming, the base unit being disposed in a residence; and issuing an alert in response to the detected network jamming, the alert being last least one of: sounding an audible alarm, showing a visual alarm indication, communicating with law enforcement, and communicating with an alarm monitoring station.

Systems, methods, and apparatus for identifying, tracking, and disrupting UAVs are described herein. Sensor data can be received from one or more portable countermeasure devices or sensors. The sensor data can relate to an object detected proximate to a particular airspace. The system can analyze the sensor data relating to the object to determine a location of the object and determine that the object is flying within the particular airspace based at least in part on location data. A portable countermeasure device can be identified that corresponds to the location of the object. The system can transmit information about the object to the identified portable countermeasure device. The portable countermeasure device can transmit additional data relating to the object to the system.

In accordance with some embodiments, an apparatus that seals the audio path of an enclosed device is provided. The apparatus includes a first housing portion and a second housing portion, when mated, are arranged to enclose a device, where a surface of the second housing portion is arranged to impart pressure on the device toward the first housing portion. The apparatus further includes a first supporting portion disposed along one side of the first housing portion and arranged to support the device. The apparatus also includes a first liner disposed in the first housing portion and arranged to form a first cavity, where the first cavity is adjacent to the first supporting portion. The apparatus further includes a noise generator operable to provide noise signal stream and a first audio output device coupled to the noise generator operable to output first masking signals to the first cavity.

A portable radar detection dynamic frequency selection automatic test device is provided, which includes a radar signal generator and a computer host. The radar signal generator is plugged into an USB connection interface to connect to the computer host connected to a wireless network device. The computer host transmits a radar signal file via the USB connection interface to generates a radar signal and transits the radar signal to a wireless network device via a radar transmission interface. Meanwhile, a processing unit of the computer host performs a radar detection rate test in order to determine whether the wireless network device detects the radar signal.

Methods and systems for remediation of jammed networks are provided. Exemplary methods include determining by a base unit of a jammed network and if outside connectivity available. The connectivity can include wired and wireless broadband networks. If connectivity is available, at least one external service is notified. Further, a user device can be notified. A local alert can be generated in the form of a phone call or test message. Also, a local action can be taken. Information associated with the jammed network is stored for later delivery if connectivity is not available where the base unit is located in a residence. Further, an alert can be issued in response to the detected network jamming, the alert being at least one of: sounding an audible alarm, showing a visual alarm indication, communicating with law enforcement, and communicating with an alarm monitoring station.

An electrochemical gas sensor (10) includes a housing (20) and with at least one electrode (21, 22). The housing (20) has a gas inlet (23). An at least strongly acidic, liquid electrolyte (30) is present in the gas sensor (10). The electrolyte (30) partly wets the electrode (21, 22). Provisions are made in such a gas sensor (10) for the electrolyte (30) to contain an additive that contains at least one surfactant. An electrolyte (30) is also provided for a gas sensor (10), which electrolyte (30) contains at least one surfactant as an additive.

There is provided a method and corresponding arrangement and units for radar detection in a wireless communication system operating in a spectrum shared with at least one radar system. The method basically comprises the steps of collecting (S1) measurement information related to radar sensing measurements by aggregating radar sensing measurements from multiple, geographically distributed radar sensing units forming a radar sensing network implemented in the wireless communication system, and processing (S2) the measurement information according to at least one radar sensing rule to generate a radar detection result. With this new and fundamental radar detection procedure in place, it may further be beneficial to take action(s) for radar protection and/or dynamic adjustment of radar detection functionalities.

An access point in a wireless network communicates wirelessly with one or more client devices over a channel that includes a plurality of subchannels. Radar is detected on a first subchannel of the plurality of subchannels. It is determined to puncture the first subchannel, based on the detecting the radar on the first subchannel and based on one or more puncturing factors. The first subchannel is punctured, the puncturing comprising muting one or more subcarriers on the first subchannel.