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2. TV Ears - Wikipedia

   en.wikipedia.org/wiki/Tv_ears

   The 5.0 Dual Digital wireless TV listening system, is the most powerful of the TV Ears’ headsets, containing twice the number of light emitting diodes. The system operates off of a digital connectivity via an optical digital audio cord and is compatible with Dolby Digital, SRS, and PCM ensuring that it works successfully with any television ...

3. Bluetooth - Wikipedia

   en.wikipedia.org/wiki/Bluetooth

   Website. www .bluetooth .com. A Bluetooth earbud, an earphone and microphone that communicates with a cellphone using the Bluetooth protocol. Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs).

4. The Thing (listening device) - Wikipedia

   en.wikipedia.org/wiki/The_Thing_(listening_device)

   The device consisted of a 9-inch-long (23 cm) monopole antenna (quarter-wave for 330 megahertz [MHz] frequencies, but it was also able to act as half-wave [at 660 MHz] or full-wave [at 1320 MHz]; the accounts differ. Given the radio technology of the time, the frequency of 330 MHz is most likely, equivalent to a wavelength of 91 cm). [4]

5. Holmdel Horn Antenna - Wikipedia

   en.wikipedia.org/wiki/Holmdel_Horn_Antenna

   Penzias and Wilson standing on the Holmdel Horn Antenna in 1962. /  40.39072°N 74.18483°W  / 40.39072; -74.18483. The Holmdel Horn Antenna is a large microwave horn antenna that was used as a satellite communication antenna and radio telescope during the 1960s at the Bell Telephone Laboratories facility located on Crawford Hill in ...

6. The Best Car Antennas In 2024 - Autoblog

   www.autoblog.com/article/car-antenna

   Votex 6 3-4-Inch Antenna - $29.99. $29.99 at Amazon. One major difference between modern antennas and ones made in the early 2000s is that they’re generally a lot shorter today. Manufacturers ...

7. 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 ...