The FK-3000 from Mini Circuits is a Frequency Doubler with Input Frequnecy 70 to 1500 MHz, Output Frequency 140 to 3000 MHz, Input Power 12 to 15 dBm, Conversion Loss 11 dB, Harmonics -25 dBc. Tags: Module with Connectors, Frequency Doubler. More details for FK-3000 can be seen below.