IFR Systems' new 2975 digital radio test platform offers an efficient means for testing terminals, repeaters and base stations for Project 25. The platform integrates 20 radio-testing instruments into a single instrument that offers the interconnectivity normally expected from a PC. Providing independent generate and receive functions from 1 MHz to 2.7 GHz, the 2975 allows duplex operation over a full instrument range. It also has two audio-function generators to support conventional FM terminal testing. The platform enables comprehensive transmitter spectrum performance testing while its full-range spectrum analyzer and tracking generator facilitate base-site component testing. Its built-in dual-channel wideband oscilloscope provides comprehensive triggering capability for viewing demodulated data.