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2. Cygnus (spacecraft) - Wikipedia

   en.wikipedia.org/wiki/Cygnus_(spacecraft)

   Cygnus is an expendable American cargo spacecraft used for International Space Station (ISS) logistics missions. Cygnus was developed by Orbital Sciences Corporation, partially funded by NASA under the agency's Commercial Orbital Transportation Services (COTS) program. To create Cygnus, Orbital paired the Multi-Purpose Logistics Module, built ...

3. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio ...

4. AN/PRC-77 Portable Transceiver - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-77_Portable_Transceiver

   AN/PRC 77 Radio Set is a manpack, portable VHF FM combat-net radio transceiver manufactured by Associated Industries [ 1 ] and used to provide short-range, two-way radiotelephone voice communication. [ 2 ] In the Joint Electronics Type Designation System (JETDS), AN/PRC translates to "Army/Navy, Portable, Radio, Communication."

5. Cygnus A - Wikipedia

   en.wikipedia.org/wiki/Cygnus_A

   In 1951, Cygnus A, along with Cassiopeia A, and Puppis A were the first "radio stars" identified with an optical source. Of these, Cygnus A became the first radio galaxy, the other two being nebulae inside the Milky Way. [5] In 1953 Roger Jennison and M K Das Gupta showed it to be a double source. [6] Like all radio galaxies, it contains an ...

6. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   Bluetooth HID is a lightweight wrapper of the human interface device protocol defined for USB. The use of the HID protocol simplifies host implementation (when supported by host operating systems) by re-use of some of the existing support for USB HID in order to support also Bluetooth HID. Keyboard and keypads must be secure.

7. List of Wear OS devices - Wikipedia

   en.wikipedia.org/wiki/List_of_Wear_OS_devices

   Microphone and speaker TicWatch Pro: 2018-07-10 Wear OS 2.24 H MR1 (Android 9.0.0) Qualcomm Snapdragon Wear 2100 512 MB Yes 415 mAh $249.99 IP68 + Waterproof: 5 ATM (swim-ready, up to 50m) + US Military Standard: MIL-STD-810G: Microphone and speaker TicWatch Pro 4G: 2019-07 Wear OS 2.24 H MR1 (Android 9.0.0) Qualcomm Snapdragon Wear 2100 1 GB Yes

8. History of radio - Wikipedia

   en.wikipedia.org/wiki/History_of_radio

   History of radio. The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of ...

9. List of amateur radio transceivers - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio...

   Kenwood TS-820S. The Kenwood TS-820S is a model of amateur radio transceiver produced primarily by the Kenwood Corporation from the late 1970s into the 1980s; some were produced by Trio Electronics before Kenwood's 1986 name change). The transceiver's predecessor was the TS-520, which began production a year earlier.