The FTR-1845 from RF Bay is a Frequency Multiplier with Input Frequency 600 to 630 MHz, Output Frequency 1.8 to 1.89 GHz, Harmonics 35 to 65 dBc, Conversion Loss 12 dB, Frequnecy 600 to 630 MHz. Tags: Module with Connectors, Active. More details for FTR-1845 can be seen below.