It is a good idea to store the satellite.xml file in the etc/enigma2 folder. It will not automatically be overwritten during on line updates if it is stored in the etc/enigma2 folder.

Open the satellites.xml in a program for editing .xml files such as notepad++.. Open a satellite.xml file, then copy an existing satellite, change it to what you want, then insert it back into the satellite .xml file. Here is an example.

<sat name="11.0W Express AM44 Ku Band" flags="1" position="-110">
<transponder frequency="10957000" symbol_rate="2300000" polarization="1" fec_inner="4" system="1" modulation="2"/>
<transponder frequency="10983000" symbol_rate="12110000" polarization="1" fec_inner="0" system="0" modulation="1"/>
<transponder frequency="11033000" symbol_rate="1795000" polarization="0" fec_inner="4" system="1" modulation="2"/>
<transponder frequency="11483000" symbol_rate="3470000" polarization="1" fec_inner="0" system="0" modulation="1"/>
<transponder frequency="11566000" symbol_rate="8000000" polarization="0" fec_inner="3" system="1" modulation="2"/>
</sat>

We will change this to: Galaxy 25 at 95W
<sat name="95.0W Galaxy 25 Ku Band" flags="1" position="-952">
<transponder frequency="10957000" symbol_rate="2300000" polarization="1" fec_inner="4" system="1" modulation="2"/>
<transponder frequency="10983000" symbol_rate="12110000" polarization="1" fec_inner="0" system="0" modulation="1"/>
<transponder frequency="11033000" symbol_rate="1795000" polarization="0" fec_inner="4" system="1" modulation="2"/>
<transponder frequency="11483000" symbol_rate="3470000" polarization="1" fec_inner="0" system="0" modulation="1"/>
<transponder frequency="11566000" symbol_rate="8000000" polarization="0" fec_inner="3" system="1" modulation="2"/>
</sat>

It is important to remember that two satellites cannot have the exact same orbit position, else the file will not work correctly. So alter the satellite degrees by a tenth or two to keep the c/ku satellites from having the Exact same orbit location. I prefer to alter the C band orbit instead of the ku band for USALS. The example above in red has an orbit location of 95.2 West in the receiver.

Insert the modified satellite back into the sat file and you are done. If it does not work, carefully check for mistakes. Put the modified sat file in the etc/enigma2 folder. That way if you have a problem, you can simply delete the satellite file and reboot the box.

There is also a plugin named TS Sat Editor that will allow you to modify the sat file using the receiver.

The blindscan plugin looks at the transponders in satellites.xml, so it is a good idea to have c band transponders for a c band satellite.