Increasing output wattage on a uhf

[the evil twin]

Might just have to go and welcome 3 months worth of newcomers

Please don't... one per forum is enough... hehehe

Kimbo,

When you said 1/2 watt originally i thought you wanted to "up" a dinky handheld you had or somesuch.

Your GME is a 5 watt set already so if you have it connected to a decent antenna and a good SWR (no shitty coax or dodgy connectors) trying for 10 watts. won't get you much more useable range anyway.
'Useable' meaning where both you and another mobile can communicate.
Mobile to repeater or mobile to a good base (homestead or whatever) would be a different scenario