Hello Yelow_cad.My Rx is currently a DSM so do I need to upgrade to a DSM2 in order to use a RCS Tx3? Also, what type of battery does the Tx3 use? I will communicate with RCS. Right now, I am just trying to get the basics.
Yes, you will need to update to DSM2/DSMX. The old DSM2 standard is not compatible with the latest versions.
Once upon a time all types and brands of R/C would basically work together.
Nowadays they do not. Spectrum (DSM2/DSMX) for example will not work with Futaba.
However, all is not lost. DSM2/DSMX is a specific protocol that has a number of different makers supporting it. For example low cost 2.4 GHz Rx's are available from Orange (Hobby King) Lemon (Xenon), Deltang and Micron in the UK and RCS in Australia.
Most of the after market Tx handpieces use a regular 9 volt PP3 type of battery.
Apart from offering automatic binding (as distinct from removable plug induced binding) one other useful feature is some of the Tx and Rx combinations can also be used for battery R/C.