The 1221SM12 from APA Wireless is a Voltage Controlled Oscillator with Frequency 1200 to 2100 MHz, Power 3.981 mW, Tuning Sensitivity 20 - 70 MHz/V, Tuning Voltage 0.5 to 25 V, Phase Noise -75 dBc/Hz. Tags: Surface Mount. More details for 1221SM12 can be seen below.