For my micro-controller-based doppler tuning project, I'm trying to work out formulas for deriving transponder uplink frequencies from those of the downlink. (Davidoff (1998) is a bit less generous on this topic than on others.) I created a posting on my blog which outlines the math I've come up with so far. I'd be grateful if the members of this list wanted to look it over and offer their wisdom and criticism:

http://ve9qrp.blogspot.com/2010/02/calculating-linear-transponder-uplinks.ht...