Cheesehead,

The low and high bands you mention are only for Futaba systems. All the other brand's receivers can use any frequency crystal you choose. If you go with a synthesized radio system, you can literally dial-in any available frequency into the transmitter and then match the receiver crystal to the xmtr. Polk's Hobby uses a crystal-less system where you choose a frequency on the transmitter, and then program the receiver for that freq. The transmitter will scan the airwaves to make sure that your chosen channel is not already being used. Then there's the spread spectrum radios...

Jesse