I just learned something...
dansy is correct...
....I just bought a new JR 8103 on 53MHz and measured the receive antenna's length last night ---- 39"!
I would have thought it would be much longer at this lower frequency.
Range would still be lowered I would think with less than a 1/x wavelength receive antenna. I guess we fly so close it doesn't matter. The receiver is probably in saturation all the time anyway.
Thanks for the tip, guys!
-dave-
