The IM-221S from Rosenberger is a PIM Analyzer with TX Frequeny 2110 - 2170 MHz, RX Frequency 1920 - 2060 MHz, Tx Carrier Power 36 to 46 dBm, PIM Sensitivity < -168 dBc, Residual PIM < -168 dBc. Tags: Portable. More details for IM-221S can be seen below.