I537-2O7- 40.000 MHZ I537-2O7-10.000 MHZ I537-2O7-12.000 MHZ I537-2O7-16.000 MHZ I537-2O7-20.000 MHZ I537-2O7-24.000 MHZ I537-2O7-24.576 MHZ I537-2O7-25.000 MHZ I537-2O7-26.000 MHZ I537-2O7-27.000 MHZ