The Traxar is simply a stripped down Mostar 800 and uses the same programming.
Unfortunately, it uses one-shot bi-polar PROMS. If you can find a copy of the PC software (I think there was also an R1801 suitcase programmer version, too), you can use any universal EPROM burner to burn the PROM. Just save the codeplug image to disk after creating it rather then sending it to the Motorola burner, and then read it with your burner software.
This information pertains to the 800 versions only.