The APLS0542.5-R from ASB Inc. is a Frequency Synthesizer with Frequency 542.5 MHz, Reference Frequency 10 MHz, Output Power 3 dBm, Harmonics -25 dBc, Spurious -65 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APLS0542.5-R can be seen below.