[time-nuts] HP E1938A Oscillator

Magnus Danielson magnus at rubidium.dyndns.org
Fri Jul 5 04:54:56 EDT 2013

Hi Perry,

On 07/05/2013 07:23 AM, Perry Sandeen wrote:
> List,
> I was looking on Ebay for some HP E1938A
> oscillators
> What I found listed were:
> HP E1938A 10 MHz Quartz Oscillator with EFC on PC
> board. $100 Fluke.l
> HP E1938-60201 Ovenized Crystal Oscillator  (on a PC board) $100 Tomy Chou
> HP E1938A Ovenized Crystal Oscillator  W/O a PC board for $50 and free shipping from  2010bluebook.
> My question is thus:  What does the PC board do?  All I need is a HP EFC oscillator that would
> be better that my HP 10811-60111’s.
> Do I need to worry that the E1938A’s without the
> board maybe of lessor quality than the others?
> Fluke.l says his units are good but not stellar.  The other venders say they have tested the
> units and guarantee them to be good.  If
> so, would it get better with aging?
> So what does the collective wisdom/experience of
> the group think?  TIA

Don't get the puck only. Pulling it from the board with all it's support 
functions, including oven controller etc. was a bad move. Do look at the 
material online to see what I mean.


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