Good heavens! I use that transmitter on our Website as an example of why you shouldn't buy Chinese transmitters. Unless the design has changed, it's illegal to operate one in the USA, even with a license. Don't do it. They tend to be very spurious. they also don't generally output the amount of power they claim.
The ones that I have seen do not have real exciters and there's no AFC or AFC lock to prevent the transmitter from operating on the wrong frequency. The RF is generated by a Silicon Labs chip designed for FM car modulators, which is why it doesn't have any of the safegards required for FCC type verification. This has been true of all of the Chinese transmitters, including FM User, Warner, CZE, Primex and several others. Be sure what you buy is FCC type verified or, if you're an LPFM station, it must be FCC Type Certified.