The APL1810-T from ASB Inc. is a Frequency Synthesizer with Frequency 1.78 to 1.84 GHz, Step Size 25 KHz, Reference Frequency 13 MHz, Output Power 1 to 5 dBm, Harmonics -20 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for APL1810-T can be seen below.