[time-nuts] Datum / Efratom LPRO 101 - ebay

[Nils Palm]

Dear All,

I am a new in this field and need some advice.
For the adjustment of our quarz clocks we need a reference.
I came across some cheap offers on ebay for a

EFRATOM / DATUM LPRO Rubidium oscillator

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=180338976648QQssPageNameZMERC_VI_RCRX_Pr4_PcY_BIN_Stores_IT&refitem=180340823127&itemcount=4&refwidgetloc=active_view_item&usedrule1=CrossSell_LogicX&refwidgettype=cross_promot_widget&_trksid=p284.m184&_trkparms=algo%3DCRX%26its%3DS%252BI%252BSS%26itu%3DISS%252BUCI%252BSI%26otn%3D4

Now I was wondering what about these oscillators.
Why are they offered so cheap and so many. What have
they be used for ?
Also I cannot find any information about the manufacturer
on the internet. Are they out of business ?

Would such a oscillator be usefull for us, as we need
a 10Mhz signal with about 1e-8 precision.

Thanks a lot !

nils