For backupsa handheld VHF radio carried as an emergency backup, how wouldshould I expect the effective radius of a handheld radio comparingto compare with onboardon-board radios in two-way communications? I figure the receiver partreception should be the same. How about the transmitter part? PhysicallyBut transmission would probably be different, it dependsdependent on the power. Does it really matterWould the difference be significant? What factors would change the useful radius of a lothandheld radio?