Yes indeed as red head has indi9cated above you might just choose to do that. Now if you desire to go to the advantages of 2.4 such as never agine worry about frequency control, some clubs no longer even maintain frequency boards, then you still may be able to convert to 2.4 and yes its possible de-pending upon exactly which Hitec Tx's you may have. For example any of the hitec Tx's that utilized a frequency module in the back can be easily converted to 2.4. When this is done only a new module and a new 2.4 rx is required.

So what exactly are your Hitec Transmitters called???

John