a plurality of removable or fixed network functional modules, wherein each network functional module comprises one or more radio modems or radio transceivers; one or more internal antenna array modules adapted to receive and transmit radio signals; and one or more antenna interface modules and accompanying SMA, SMB, BNC, or similar antenna ports that support the connection of external antennas; and

one or more processing units removably connected to the plurality of network functional modules through one or more internal computer expansion buses;

wherein the processing unit is adapted to dynamically reconfigure the plurality of network functional modules for monitoring, testing, and measuring multiple heterogeneous radio communications networks of different types, technologies and modulation schemes, and collecting multiple radio access network parameter measurements from the plurality of network functional modules to produce multiple radio frequency (‘RF’) log files or data streams containing radio network measurement data; wherein one or more of the cellular radio modems is in the form of discrete cellular, NB-IoT or CAT-M1/CAT-M2 modems, or cellular, NB-IoT or CAT-M1/CAT-M2 modems embedded within ‘systems on chip’ (SOCs) or ‘systems in package’ (SIPs) or ‘systems on module’ (SOM's); and wherein one or more of the radio transceivers is in the form of discrete Wi-Fi, P25, TETRA or LoRA radio transceivers, or Wi-Fi, P25, TETRA or LoRA radio transceivers, each in the form of a software defined radio module (SDR) based radio transceiver, a field programmable gate array (FPGA) based radio transceiver, or an application-specific integrated circuit (ASIC) based radio transceiver.