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2. Wireless intercom - Wikipedia

   en.wikipedia.org/wiki/Wireless_intercom

   A wireless intercom is a telecommunications device that enables voice communication without the need to run copper wires between intercom stations. A wired intercom system may incorporate wireless elements. There are many types of wireless intercom systems on the market. Most wireless intercom systems communicate by radio waves using one of the ...

3. Clear-Com - Wikipedia

   en.wikipedia.org/wiki/Clear-Com

   The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. Clear-Com was purchased in 2010 by Southern California electronics manufacturer HME, known for supplying wireless headsets for drive-through fast-food restaurant operations. Company headquarters were moved from Poway to Carlsbad, California, in 2018. References

4. List of WLAN channels - Wikipedia

   en.wikipedia.org/wiki/List_of_WLAN_channels

   Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.

5. The Fastest Drive-Thru Chains Out There - AOL

   www.aol.com/finance/fastest-drive-thru-chains...

   Fast-Food Drive-Thrus, Ranked. In 1948, In-N-Out came up with the most quintessentially American technology: the modern drive-thru.With its intercom ordering system and promise of fast service ...

6. The 7 Best Wireless Surround Sound Systems for an ... - AOL

   www.aol.com/lifestyle/best-wireless-surround...

   Best Wireless Surround Sound Systems. Best for Audio Fanatics: Nakamichi Shockwafe Elite. Best Theater Sound: Sony HT-A7000. Best Value: VIZIO M-Series 5.1. Best Upgrade For A Wired System ...

7. Drive-through - Wikipedia

   en.wikipedia.org/wiki/Drive-through

   Some fast food chains, such as this Rally's located near New Orleans, Louisiana, have two drive-throughs. A drive-through or drive-thru (a sensational spelling of the word through ), is a type of take-out service provided by a business that allows customers to purchase products without leaving their cars. The format was pioneered in the United ...