In Australia the main R/C aircraft frequency is 36 Mhz. A couple of spots on 40 Mhz are available but that frequency is shared with pagers etc so not many choose to use it. 29Mhz is also available but is mostly used by R/C buggies.
The standard antenna length here seems to be 39 inches as well.
????
I wonder if that is optimal on 36 Mhz? Any opinions?
