The PEM850 from AWT Global is a PIM Analyzer with TX Frequeny 869 to 896 MHz, RX Frequency 824 to 851 MHz, Transmitter Freq. Accuracy ±2 ppm, Tx Carrier Power 20 to 44 dBm, Transmitter Power Accuracy ±0.35 dB. Tags: Bench Top. More details for PEM850 can be seen below.