Some good points Richard.

have no idea about the rules in the US...will read that URL link when I can.The removable link though ...the one you describe sounds better re the way it cant come out but at least with a totally removable link you have a visable sign that the bot is dead. It is handed in to transmitter control so there is NO WAY you can make your bot active in the pits without permission...plus if it does pop out in a fight it at least fails to safety...annoying re losing the fight I know, but at least the bot is definately dead.

The frequency thing...not sure what it is in the states (72? 75? Mhz) but there are some radio sets like the Futaba FF7 (like we use) and much more modern sets than this that use interchangeable RF modules ...I have a 40mhz one in the transmitter for robot stuff and a 35mhz one for model aircraft stuff. I agree though you would still have to buy a different receiver.

Hope you can make it over here.

Tom