Willtek™s 9101 Handheld Spectrum Analyzer is a low cost, full-featured spectrum analyzer. With a frequency range up to 4 GHz, the 9101 can test all modern wireless local oscillators, plus the harmonics and spurs that can mix and break through into the pass-band. Its complete coverage of carrier and IF stages give the performance needed when other analyzers run out of bandwidth. The 9101 includes all the specifications of other sophisticated lab instruments, all in a handheld package weighing less than 2.5 kg,