forum thread Posted by ppxyz1 | Staff • 2d ago
Jul 10, 2025 6:22 PM
Item 1 of 5
Item 1 of 5
forum thread Posted by ppxyz1 | Staff • 2d ago
Jul 10, 2025 6:22 PM
Prime: 2-Pack Motorola Solutions Two-Way Radios (Rechargeable, 22 Channel, 20 Mile, Black W/Red) $39.99 + Free Shipping
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Radios can communicate via line of sight. A cheap FRS radio can communicate for 100 miles if one of them is high enough and there is nothing in the way. At the same time, on the open ocean, these wouldn't be able to communicate from more than 2 miles away due to the curvature of the earth.
Basically, ignore the mile rating. These almost certainly work that far away under normal circumstances and if one of your radios is up a mountain, any FRS radio will work that far.
Radios can communicate via line of sight. A cheap FRS radio can communicate for 100 miles if one of them is high enough and there is nothing in the way. At the same time, on the open ocean, these wouldn't be able to communicate from more than 2 miles away due to the curvature of the earth.
Basically, ignore the mile rating. These almost certainly work that far away under normal circumstances and if one of your radios is up a mountain, any FRS radio will work that far.
Isn't the curvature of earth something like 8" height change per mile? Therefore it would require 16" above water to reach someone 2 miles away.
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