Well, You learn something new every day. Since these are the 10811A they are the first of the model pairs (A/B and D/E) to come out in the 10811 model line. It is entirely possible that engineering decided to not include the prefix for those. It's a departure from the standard format for serial numbers from HP in those days, and I suspect that later the standard format was re-introduced.
After all, without the prefix, it's pretty hard to pin down the general age of the product and what changes were present. Dave Carlson ----- Original Message ----- From: "Javier" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Wednesday, 01 June, 2005 8:08 AM Subject: Re: [time-nuts] Re: 10811 serial numbers I've a 10811A with s/n A00591, no prefix, also a A01096, no prefix, and the label in both units is an original HP one, looking the same as the labels I've on some 10544As with 1436A prefix. So I think that 10811A oscillators with no prefix on the serial number are not so strange. Regards Javier, EA1CRB lberto di Bene wrote: > Dave Carlson wrote: > >[...] >I can't say where that strange "A03912" number came from, except that it may >have been a separate asset number added to that oscillator by the previous >owner or that as a result of a previous repair a new label was generated as >a replacement and the prefix was not considered relevant. > > > Dave, > thanks for your clarification. Looking at the unit, it seems to me > that the label with the S/N is the original > one placed on the OCXO by the manufatcturer, but of course I could be > wrong. This is a photo of the > oven oscillator in question. > 73 Alberto I2PHD > > > >------------------------------------------------------------------------ > >_______________________________________________ >time-nuts mailing list >[email protected] >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
