I frequently see the mistaken comment that the antennas of our RC equipment is cut to a frequency. WRONG WRONG WRONG . The antenna on most RC units, regardless of frequency is 39 to 41 inches (roughly 1 meter) and then the circuitry inside the receiver is tuned by adjustment of L and C to best receive the freqency of interest. Adding or reducing length will usually have undesireable effects, most often reduced range and definatelly poorer selectivity. Unless you have the test equipment necessary to measure these effects, you will be wise to not try to change the length. If you want more info on this, you may want to check out MrRC-Cam's web site as he has done some experimenting in changing antenna lengths along with the results, some good, most bad.