SatcoDX Satellite Chart

Column Explanation

What is "Ch #"?

Ch #

Channel Number

Satellite operators use a numbering system on the frequencies their satellite transmits down to Earth. However, there is no worldwide standard on how the numbers are assigned to the frequencies, thus each satellite operator invents its own proprietary numbering system. In certain areas such as North America, a unified numbering system is in use. A satellite operator will often use a standard numbering system across all the satellites in its fleet.
Note: A channel number such as "40" might represent a certain downlink frequency on one satellite, a different frequency on another satellite, and another frequency on yet another satellite.