The PiMPro Tower 1921 from Communication Components Inc is a PIM Analyzer with TX Frequeny 1.93 to 2.17 GHz, RX Frequency 1.71 to 1.91 GHz, Transmitter Freq. Accuracy < 5 ppm, Tx Carrier Power 24 to 46 dBm × 2 (100 mW to 40 W × 2), Transmitter Power Accuracy 0.3 dB. Tags: Portable. More details for PiMPro Tower 1921 can be seen below.