Hi all,

 I think the following could be skynet 5C:

Downlink Bandwidth

245.900    38KHz
249.500    8KHz
249.550    8KHz
249.880    8KHz        
249.900    8KHz
250.100    8KHz
254.730    38KHz
256.600    38KHz (was 256.5905)
261.100    38KHz

Have a look at the attached FFT, you can see the UHF transponder move from 256.5905 to 256.600!

regards, pjm