Interesting, I do have a 9C and I never thought about canceling the boot up. I have a campac clone and I measure the boot up at 3 seconds. While I can cancel the boot-up (an option I didn't know I had) why would I? If this is checking out my transmitter, then it is one more assurance that I will have a successful flight. I want all of the comfort I can get.

Believe it or not, I do a range check after I make changes to a plane. I also do a range check at 'ANY' new field that I fly at. The first time in 4 years that I didn't do that, I crashed! (Venice contest). Guess what????? I will never not do a range check at a new field again! I need all the guarantees of a successfully flight I can get.... 3 seconds! just not worth it