I like to purchase a radio for each tank I own just so I can use all the tanks at once or share with friends...
Some prefer not to share (somewhat understandable) or prefer to have only one radio to keep track of and will use the same radio for several tanks and just buy additional receivers for each tank on the same channel #

Since the radios are right at $100 when using the monthly coupon ... It is worth it to me to have the independence to have all my tanks running if needed/wanted ...........

-TOMAS