The APL0477.19- R from ASB Inc. is a Frequency Synthesizer with Frequency 477.19 MHz, Step Size 10 KHz, Reference Frequency 13 MHz, Output Power 5 to 7 dBm, Harmonics -25 to -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL0477.19- R can be seen below.