The E10-CPT from Quartzlock is a Rubidium Oscillator with Frequency 10 MHz, Frequency Retrace ±0.05 ppb, Supply Voltage 3.15 to 3.45 V, Power Consumption 1.6 W (Stabilized), 5.2 W (Warm-Up), Phase Noise -145 to -90 dBc/Hz. Tags: Drop-in. More details for E10-CPT can be seen below.