The VCO1258-1308 from Dynamic Engineers is a Voltage Controlled Oscillator with Frequency 1.258 to 1.308 GHz, Power 1.3 mW, Tuning Sensitivity 18 MHz/V, Tuning Voltage 0.5 to 4.5 V, Phase Noise -114 dBc/Hz. Tags: Surface Mount. More details for VCO1258-1308 can be seen below.