The FDT-500A from Crane Aerospace & Electronics is a Frequency Multiplier with Output Frequency 10 to 1000 MHz, Input Power 2 to 13 dBm, Harmonics -45 to -25 dBc, Conversion Loss 10 to 15 dB, Frequnecy 5 to 500 MHz. Tags: Through Hole, Frequency Doubler. More details for FDT-500A can be seen below.