CPS R02.02.00 Modification for MCS 2000 900MHz OK. I figured out what to change in R02.02.00 CPS for the MCS 2000 to operate in the 900MHz amateur band. This modification should allow receive down to 927.0000MHz, and transmit up to 903.9875MHz. In the MCS2000.exe file, use your favorite hex editor (I prefer Hex Workshop) to search for the following hex values: AC3CC335 (represents 901987500) Replace it with 2CC1E135 (represents 903987500) Then 9428BB37 (represents 935.012500) Replace it with C0E54037 (represents 927.000000) Please make sure you search the ENTIRE document for the original values, as they may appear more than once. If I recall correctly, one value appeared twice, the other only once. Just save the file (make sure to save a backup copy!) and then launch the CPS. Read your radio, and you should now be able to enter receive frequencies from 927.0000 through the commercial frequencies, and transmit frequencies up to 903.9875. Enjoy.