<br>Perhaps I misread, I thought Bob was saying that as the sat approached, the RX doppler was higher than nominal, AND at the same time the TX was lower. The doppler effect does not know which end(s) are moving, it is only about relative motion, so
as the distance is decreasing, doppler shift is always up and as
distance is increasing doppler is always down, regardless of who is speaking.<br><br>RX 437.560 TX 437.540 Approaching<br><br>So the sat is far away, and the relative velocity between it and me is high.<br>So my TX gets upshifted by some amount as seen by the sat. (matches earthbound experience with train horns and such) but so does the sat TX, appearing higher on the dial than it would if we were both at rest with respect to each other. The above has me looking for the sat tx frequency LOWER than nominal, when the doppler effect will be pushing the sat tx frequency higher.<br>
<br>How could it be different?<br><br>The table makes no sense to me. The frequencies should be the same for RX and TX, just shifting through the appropriate memory as the sat approaches , and then recedes.<br>