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2. The 8 Best Walkie Talkies on Amazon Ensure You’re Never Out ...

   www.aol.com/hello-favorite-walkie-talkies...

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3. Amazon Sidewalk - Wikipedia

   en.wikipedia.org/wiki/Amazon_Sidewalk

   Amazon Sidewalk is a low-bandwidth long-range wireless communication protocol developed by Amazon. [1] It uses Bluetooth Low Energy (BLE) for short distance communication, [ 2 ] and 900 MHz LoRa and other frequencies for longer distances.

4. Two-way radio - Wikipedia

   en.wikipedia.org/wiki/Two-way_radio

   The first two-way radio was an AM-only device introduced by the Galvin Manufacturing Corporation in 1940 for use by the police and military during World War II, and followed by the company's 1943 introduction of the Walkie-Talkie, [3] the best-known example of a two-way radio. [4]

5. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   Since 3 February 2004, the Infocomm Development Authority of Singapore (IDA) has allocated the 446.0–446.1 MHz frequency band for low-powered walkie-talkies on a non-interference, non-protected and shared-use basis.

6. Our Favorite Walkie Talkies From the Trails to the Worksite - AOL

   www.aol.com/favorite-walkie-talkies-trails...

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7. Baofeng UV-5R - Wikipedia

   en.wikipedia.org/wiki/Baofeng_UV-5R

   Frequency range [1] 136–174 MHz 400–520 MHz: Frequency steps 2.5–50k Hz Transmitter power output: 5 W PEP: Waveforms (modulations) FM: modulation rate: Power input Receiver only 20 mA, Transmitter 1 A max. Operating voltage 6.5 – 9 V, Nominal voltage 7.2 V: Measurements and weight High 140 mm Width 70 mm Depth 30 mm Weight approx. 400 grams