If Bob is setting you up with a futaba skysport 2.4 you can just buy new recievers to put into as many tanks as you end up with. You'll just have to bind the transmitter
to each said tank being used.

http://www3.towerhobbies.com/cgi-bin...&I=LXXMV6&P=ML

http://www3.towerhobbies.com/cgi-bin...?&I=LXYVD4&P=M