The RFS5000A-LF from Z-COMM is a Frequency Synthesizer with Frequency 5000 MHz, Reference Frequency 10 MHz, Output Power -2 to 2 dBm, Harmonics -20 dBc, Spurious -65 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for RFS5000A-LF can be seen below.