For instance, there have been five satellites in the Spacenet series, and six in the G-STAR series. Make sure you have the satellite's name and number correct. This is the part that confuses most people. Every satellite has many transponders. Therefore, a satellite with 12 transponders usually has 24 channels.
Every channel has a polarity, horizontal or vertical.
You need to understand the difference between a transponder and channel, but remember, receivers tune by channel, so that's the most important information. It's a plus to know which transponder is involved because of differences in receiver tuning, but concentrate on knowing the channel. Satellite audio has two channels for stereo service. In some cases, audio is only fed on one channel, or English may be on one, Spanish on the other. If you see notes in this area, you may need to switch your receiver to listen to a specific channel.