I watched construction workers use their cell phones as walkie talkies in the 2000s. Since it was cellular, they would bounce off cell towers just like HAM radio operators use repeater towers. Then Apple comes along a few years later and allows the use of wi-fi to communicate between cell phones. This walkie talkie from Motorola can use both cell and wi-fi. That means, like HAM operators you can talk to someone in a distant city bouncing off the towers but with a monthly service plan needed. How times have changed with tech.
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I watched construction workers use their cell phones as walkie talkies in the 2000s. Since it was cellular, they would bounce off cell towers just like HAM radio operators use repeater towers. Then Apple comes along a few years later and allows the use of wi-fi to communicate between cell phones. This walkie talkie from Motorola can use both cell and wi-fi. That means, like HAM operators you can talk to someone in a distant city bouncing off the towers but with a monthly service plan needed. How times have changed with tech.