The APL0840-R from ASB Inc. is a Frequency Synthesizer with Frequency 840 MHz, Reference Frequency 56 MHz, Output Power 2 to 6 dBm, Harmonics -25 to -20 dBc, Spurious -72 to -68 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL0840-R can be seen below.