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2. Long-range Wi-Fi - Wikipedia

   en.wikipedia.org/wiki/Long-range_Wi-Fi

   In tests, the speed increase was said to only occur over short distances rather than the long range needed for most point-to-point setups. On the other hand, using dual antennas with orthogonal polarities along with a 2x2 MIMO chipset effectively enable two independent carrier signals to be sent and received along the same long-distance path.

3. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   Outdoor UPS systems can either be pole, ground (pedestal), or host mounted. Outdoor environment could mean extreme cold, in which case the outdoor UPS system should include a battery heater mat, or extreme heat, in which case the outdoor UPS system should include a fan system or an air conditioning system. Internal view of a solar inverter.

4. Wireless router - Wikipedia

   en.wikipedia.org/wiki/Wireless_router

   Some wireless routers have one or two USB ports. These can be used to connect printer or desktop or mobile external hard disk drive to be used as a shared resource on the network. [ 2 ] A USB port may also be used for connecting mobile broadband modem , [ 3 ] aside from connecting the wireless router to an Ethernet with xDSL or cable modem.

5. Wireless access point - Wikipedia

   en.wikipedia.org/wiki/Wireless_access_point

   While (as of 2013) high-density 256-QAM modulation, 3-antenna wireless devices for the consumer market can reach sustained real-world speeds of some 240 Mbit/s at 13 m behind two standing walls depending on their nature or 360 Mbit/s at 10 m line of sight or 380 Mbit/s at 2 m line of sight (IEEE 802.11ac) or 20 to 25 Mbit/s at 2 m line of sight ...

6. Wi-Fi hotspot - Wikipedia

   en.wikipedia.org/wiki/Wi-Fi_hotspot

   Free hotspots operate in two ways: Using an open public network is the easiest way to create a free hotspot. All that is needed is a Wi-Fi router. Similarly, when users of private wireless routers turn off their authentication requirements, opening their connection, intentionally or not, they permit piggybacking (sharing) by anyone in range. [16]

7. Wireless power transfer - Wikipedia

   en.wikipedia.org/wiki/Wireless_power_transfer

   Short range: up to about one antenna diameter: D range ≤ D ant. [65] [67] [69] This is the range over which ordinary nonresonant capacitive or inductive coupling can transfer practical amounts of power. Mid-range: up to 10 times the antenna diameter: D range ≤ 10 D ant.