[amsat-bb] SDX transponder timing delay measurements?

I know the design isn't even done yet, but has anyone ever measured the time delay of an RF signal *through* the (demo) version of SDX?

That is, how much time would it take for the signal to go from the receiver's antenna through all the electronics, and out the transmitter's antenna?

Can someone put this on "the plan" so that it's measured before launch?

Douglas KA2UPW/5