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04 Jan 17. uAvionix Announces FCC Approved Ping200S ADS-B/Mode S Transponder for Drones. uAvionix Corporation has announced the Ping200S Mode S Transponder with Automatic Dependent Surveillance-Broadcast (ADS-B) has received FCC approval. Weighing just 50 grams, the transponder’s power consumption is low enough to be powered by battery pack for hours while still providing visibility to other aircraft up to 200 miles away. The unique combination of small size, low power, and high visibility make the Ping200S ideal for drones, high altitude balloons, and non-powered gliders. The FCC testing process ensures devices transmitting radio frequencies do so safely and effectively without interference to the operation of other equipment and systems. FCC approval of the Ping200S means the device meets the agency’s rigorous standards to transmit safely on 1090MHz with a nominal output of 250W. In addition to FCC approval, Ping200S is designed to meet the demanding performance requirements of TSO-C199 as a Class A Traffic Awareness Beacon System (TABS). Transponders are an integral part of airspace safety, helping provide separation and safe operation to tens of thousands of aircraft every day. Ping200S allows the same safety and situational awareness capabilities of traditional aircraft transponders to be equipped by drones, balloons and gliders. The Ping200S transponder allows an aircraft to respond to interrogations by traditional radar and TCAS, a collision avoidance system, found on many manned aircraft. In addition to providing replies to Mode C and Mode S interrogations, Ping200S also reports the unmanned aircraft identification, type, position, velocity and course at one-second intervals using Automatic Dependent Surveillance-Broadcast (ADS-B). Manned aircraft equipped with either TCAS or ADS-B receivers can identify and display a Ping200S equipped UAV miles in advance of visual contact, greatly increasing awareness and reducing the chance of a collision or a near-miss scenario.
“We are excited to offer Ping200S to the market. Until now, operators requiring a transponder have had to choose between unlicensed devices or heavier, power-hungry legacy solutions,” said Paul Beard, CEO of uAvionix. “The Ping200S will extend flight time and increase available payload for high altitude balloon and beyond line of sight (BLOS) UAV operators with no compromise to safe operation or performance.” (Source: UAS VISION)

21 Dec 16. Firm claims “dry submersible” emits almost no sound. The U.S. Navy is not commenting on any potential interest in an emerging “dry submersible” propulsion technology that has been demonstrated and tested by a number of DOD organizations.
Greg Sancoff, President and CEO of N.H.-based Juliet Marine Systems, told Defense Systems that its new technology has been engineered to perform multi-mission surface and underwater operations quieter and more effectively than existing platforms. Although assessed by the Office of Naval Research, no contract was awarded, and the company is now demonstrating its technology to a wider group of customers.
Developers said the majority of the engineering for the platform has already been completed, and that the submersible is uniquely configured for ISR, mine-hunting, anti-swarm operations and short-range firepower.
Using a “quieter” electric generator and electric motor, the prototype “Guardian” relies on hybrid-diesel electric propulsion and a 500hp engine to reach littoral areas and other high-risk undersea locations.
“Anything that runs under the water has 900 times more friction than anything that flies through the air.
When you surround an underwater body with bubbles, you can reduce that friction dramatically,” Sancoff said.
Juliet Marine’s “Guardian” is an adaptation of the firm’s surface-oriented “Ghost” vehicle, which uses hydro-dyn

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