Are there data allotments on cb? I believe there is no data allowed, unsure. However, you can now use up to 2.8khz bandwidth on ssb data. A recent change. This will allow much much higher speeds on things like HAMSTR on 10M or 6M. Currently, I test on the 20, 40, 80m bands at 300 and 600 baud. In theory you can now push to higher limits, the reality of physics and error correction limitations come on to play at those. I will be opening up HAMSTR to vara hf and VHF modems, and fldigi and the full suite of data modes soon. Fl digi in particular will allow for some pretty fast data transfer rates, especially on fm/VHF. Vara too.