All from http://www.phreak.org/radio/mods
| c520.txt | 9989 | 02-17-1998 | Extra functions for Standard C528/520 |
| c528.txt | 10246 | 02-17-1998 | Standard HT 528 mods (999MHz) |
| c52x.txt | 7300 | 02-17-1998 | Standard C528 |
| c52x_2.txt | 4904 | 02-17-1998 | Extra functions for Standard C528/520 |