JPMacG just about said it all. He is very correct. Remember, the antenna wire is only half the antenna circuit, the ground plane is the other half and, as JPMacG said, this can and does vary drastically with each plane. There is no good substitute for a good range check on each plane. And yes, most commercial receivers use a 1 meter length of wire for the antenna, regardless of frequency being used. Some park flyers are exceptions to this rule using much shorter antenna but they also have a greatly reduced useable range.