Originally Posted by Datayq1
With one exception, all the published BFO values are positive numbers. Has there been any verified explanation of the "-2" BFO?
The BFO/BTO values have been calculated from a "nominal terminal" outside of the satellite, and this enables the movement of both the SAT and the AES to be taken into account, while ignoring the SAT - GES C-Band link. This "nominal terminal" appears to provide the positive offset.
In the -2Hz BFO case, either the offset is not enough or the figure is a result of an incomplete handshake; the later being more probable. The BTO associated also looks "off".