The WBT by QRC Technologies provides complete RF recording and playback at 50 MHz (2x25MHz) bandwidth tunable from 50MHz to 6GHz.  At less than 10lbs and 70W, this portable solution records to solid state devices and costs far less than other products. Using the industry standard VRT file format (VITA-49), the WBT is fully contained in a single box, so there’s no need for a separate spectrum analyzer to digitize the signal, or a signal generator to play it back at RF.