At 13:54 15 January 2011, Walt Connelly wrote:

Jim, everything is meant to be within reason. The PTT feature woul
give me one less thing to fiddle with in critical circumstances. PUllin
the handheld from my pocket, holding it with one hand, usually my lef
while flying with the right can be cumbersome. The potential fo
dropping it is incurred each time it is employed which brings forth a
added hazard.

Clip the handheld to your shoulder harness, right next to your
face. That's what I do when I use one.

Jim Beckman