This is one piece of New Z-COMM VCO, 850MHZ to 890MHZ, Part Number: V580MC04 in Mini-16 Package (0.5"x0.5"x0.22").

General Spec:

• Frequency Range: 850MHz to 890MHz;
• Phase Noise: -99dBc/HZ at 10KHz offset;
• Tuning Voltage: 0V to 5V;
• Tuning Sensitivity: 40MHz (avg);
• Output Power: 8dBm;
• Load Impedance: 50 Ohms;
• Load Capacitance: 50pF;
• Pushing: < 3MHz/V;
• Pulling: < 5MHz (14dB return Loss);
• Operating temp: 0C to +70C;
• Supply Voltage: 5V/24mA;
• Package: MINI-16

Data Sheet at:

http://rfbayinc.com/upload/files/data_sheet/vco/v580mc04.pdf