The IM-TDFS from Rosenberger is a PIM Analyzer with TX Frequeny 1900 - 1920 MHz, RX Frequency 1880 - 1890 MHz, Tx Carrier Power 36 to 46 dBm, PIM Sensitivity < -168 dBc, Residual PIM < -168 dBc. Tags: Portable. More details for IM-TDFS can be seen below.