TinyTrak2 was the first in the series to support SmartBeaconing, as well as ensuring that position beacons would only be sent if a valid position was being recieved from the GPS.  TT2 also provided a Primary and Secondary configuration to allow for two profiles (possible use as different callsigns) although it only supported VHF use only.

If you have a TT2, please consider using the setup shown below.