Thats been discussed in the main FTA section a number of times over the years.
The most recent discussions were in two threads by Satcom1, and Linuxman.
Both threads have good info, and links to previous discussions on the subject.
Even tests on 36" dishes.
Also, you will find the minimal lists of transponders receivable. (search the Linuxman thread for that)
Be prepared to skim over a lot of guessing and experimenting to find the meat in both threads.