The FTR-835 from RF Bay is a Frequency Multiplier with Input Frequency 274 to 284 MHz, Output Frequency 822 to 852 MHz, Harmonics 88 to 93 dBc, Conversion Loss 10 dB, Frequnecy 274 to 284 MHz. Tags: Module with Connectors, Active. More details for FTR-835 can be seen below.