I remember reading that (the previous post, untimely post for my part...!), 'couldn't remember the exact content except for the error: "The satellites broadcast their signals back down to Earth using the L band radio frequencies (950-1450 MHZ)" They downlink using a 25 MHz chunk of the 2300 MHz "S"-Band! (Right next to Sirius). Perhaps they are stating an uplink freq which admittedly, I never investegitated -OR- it's used for their terresterial repeaters. Even then I doubt they would use that band. (STL links, HAM, Aviation, Radio Astronomy-SETI take a good chunk of that).
Edit-Added: DAB uses 1450 to 1480 MHz, just above that, as well as some VHF TV freqs in some countries.
Another thing (the uplink freqs) to find out about...
Here's a link of interest -- read the next post: