Latlon-RU-101 Rubidium Frequency standard, based on Datum Efratom LPRO, 10MHz

Description

Latlon-RU-101 Rubidium Frequency standard, based on Datum/Efratom LPRO, calibrated, factory made case (designed by me);
Frequency Accuracy At Shipment: ± 5E-11 (25°C), please check the attached test diagram (after working 6 hours, calibrated);
Tested more than 90 unit of the LPRO-101, no one has the Rubidium lamp or cell problem, so if someone tell you the lamp voltage determine the locking time, that is a rumor;
the kit's size is 215*120*51 mm (8.4"x4.7"x2"), weight is 1064 grams (2.3 Lbs), working power consumption within first 3 minutes is 35W, after working 1 hour, about 14W; the shell surface temperature is 35 degree (celsius, envirement temp is 20), after power on (LED is white) several minutes, the locking LED (red) will off means locked;
Please be aware if the LPRO 101 is not calibrated in your hand, can NOT use for accurate frequency standard since its 10 years tolerance is 1E-9 (the clock already into market more than 10 years), the frequency tolerance just like a GPSDO (the last picture is test for a new GPSDO, hot 2 hours);
LPRO 101 is a better clock within the atomic market, you can compare the KPI (aging tolerance, phase noise etc) for them, pls check the attached for LPRO 101's specification, LPRO exist a LPF in its output circuit;
LPRO 101 generates 10MHz standard Sine wave signal.
the box using the 24V 2A DC power supply;
one year warranty; Made in USA.
if you need the GPS to discipline the Rubidium or need the variable frequency (especially for audio synchronization), please check another one in my shop, that one's metal material is quite heavy;
the auction include:
one brand new Rubidium Frequency standard;
one 24V power adapter;
ship to US in free;
Please do not forget to give me feedback for the auction when you received it;