what is maximum range of this Handheld two-way radio 4 watts of output power?

Virgilio Echter: Generally, assuming you mean CB frequencies, UHF is mostly line- of- sight. Occasional unusual atmospheric changes might enhance that to quite large distances. I think you have UHF transceivers.The HF 27mHz CB frequencies can allow contact locally maybe up to 20 miles or so, depending, but in periods of high sunspot activity can potentially reach all around the world. We are currently at a sunspot minima. Nothing much doing. ...Show more

Malcom Fenoff: On a clear channel in the day, about 5-7 miles. A lot depends on conditions ,elevation,on both ends.

Willie Tun: Invalid question. Too many variables.