new experimental to operate on frequencies 1501.025- 1512.975 MHz and 1453.025-1464.975 MHz to conduct alpha test to verify system functional and performance requirements on two digital dispatch radio systems (DJSMR and MCI) new experimental to operate on frequencies 1501.025- 1512.975 MHz and 1453.025-1464.975 MHz to conduct alpha test to verify system functional and performance requirements on two digital dispatch radio systems (DJSMR and MCI)