does anyone know how to calculate the transmission bitrate for rfPIC12F675?

and im confuse about one thing. if the datasheet says it would transmit data in 433.9 mHZ, is that referring to the frequency band or the carrier frequency.? as far as i understood, it is the frequency bandwidth, and the carrier frequency depending on the oscillator that we used. isn't it??? can anyone please confirm this to me??

do you know the range of data can be transmitted by rfPIC12F675??

thank you in advance