I beg to differ, also being involved with HAM radio, am very familiar with TNC's and data packets. If you need this level of information, your sure not going to find it here on this forum. I would recommend that you seek a higher level, like asking Futaba. It serves it's purpose well for most on this forum, and I for one have no need or desire to pick at the nuts and bolts of something that does it's job. Digital servos do buzz, they do work faster, they do consume more energy, and they do the job.
Sorry we couldn't help more.