[time-nuts] Bad batch of HP10811's
Mark Amos
mark.amos at toast.net
Mon Jan 15 23:30:11 UTC 2007
FYI, the e-bay seller was Alexandra Carter. I thought maybe it was just mine, but another
buyer recently received his and same problem. It heats up just fine (I don't have a way to
actually measure the temperature inside, the outer case feels like it gets about as warm as
a working unit.
In going back to read her description of the sale nowhere does it say that she checked out
the frequency.... There are photos of a scope showing a sine wave, power applied, etc. The
lack of any mention of an actual measured frequency should have tipped me off..
------- Original Message -------
>From : Mark Amos[mailto:mark.amos at toast.net]
Sent : 1/14/2007 2:40:46 PM
To : time-nuts at febo.com
Cc :
Subject : RE: Bad batch of HP10811's
Time-nuts,
Seems like a bad batch of HP10811's was dumped on e-bay over the holidays... Some (at least
2) won't tune up to 10MHz: one won't adjust above 9,999,530 and the other peaks around
9,999,920 after warming up for a day or so. It seems to stay on frequency (albeit the wrong
one...)
I did some preliminary checks (internal reference voltages, OK, etc.) I'm thinking that it
must be a bad crystal to be this far off.
C'est une cause perdue? (I.e. did I buy a "parts" unit?)
Mark
More information about the Time-nuts_lists.febo.com
mailing list