Hi Rick, Is he available to help hot rod one with a SiGe oscillator transistor ? Steve
--- On Thu, 9/4/08, Richard (Rick) Karlquist <[EMAIL PROTECTED]> wrote: From: Richard (Rick) Karlquist <[EMAIL PROTECTED]> Subject: Re: [time-nuts] Help with HP 8640B generator To: "Discussion of precise time and frequency measurement" <[email protected]> Date: Thursday, September 4, 2008, 9:23 PM Trivia: The engineer who designed that chip for HP 35 years ago has the cubicle next to me at Agilent Labs! It was considered very advanced at the time. Rick Karlquist N6RK (employed by Agilent Technologies) Murray Greenman wrote: > I've obtained a faulty HP 8640B signal generator, and have determined > that the fault is in one of the dividers. (The unit has output only on > the top two ranges). Other than that, the generator seems to be in fine > fettle. > > Since the chance of finding a replacement gold-plated HP-numbered ECL > chip is less than improbable, I'm left with the option of trying to find > a replacement board from another junked generator. > > So, does anyone by any chance have a spare divider board from an 8640B, > or a suggestion of how to replace the 64-128MHz divider with something > else? > > 73, > Murray ZL1BPU > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
