The PE88X2011 from Pasternack Enterprises Inc is a Frequency Multiplier with Input Frequency 900 to 1800 MHz, Output Frequency 1800 to 4000 MHz, Input Power 12 to 18 dBm, Conversion Loss 14 to 17 dB, VSWR Input 2.20:1, 3.50:1. Tags: Module with Connectors, Passive, Frequency Doubler. More details for PE88X2011 can be seen below.