The A381-3XW-29 from Spacek Labs is a Frequency Multiplier with Input Frequency 12.33 to 12.67 GHz, Output Frequency 37 to 38 GHz, Input Power 17 dBm, Output Power 26 to 29 dBm, Frequnecy 12.33 to 12.67 GHz. Tags: Active. More details for A381-3XW-29 can be seen below.