The PEM400E from AWT Global is a PIM Analyzer with TX Frequeny 420 to 430 MHz, RX Frequency 410 to 412 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 PEM400E can be seen below.