Hi We’ve had a cesium back for rebuild after the Microsemi merger. The price on a tube is still in the same vicinity. If you ship the Cs back to them, they will do a rebuild and drop the tube in. The price on that process is only firm once they see the actual device. So far our rebuilds all have come out at the $35K-ish price.
Bob > On Jun 12, 2015, at 10:03 PM, lincoln <linc...@ampmonkeys.com> wrote: > > Hello, > I'm guessing I all ready know the answer to this but: > A friend gave me a hp 5061b but in need a tube. Symmetricom was listing the > price of a replacement at 35k before the go bought out by Microsemi. Given > Microsemi has a tendency to rebrand equipment and then charge 4x the price, > an official tube is likely a way non starter. Friend seemed to think there > were "other" sources for tubes, but I am rather pessimistic. > > What do you think? Is this thing junk? I would hate to scrap it. Maybe > use it to house a GPSDO. > > Link > > On Jun 12, 2015, at 6:55 AM, Cube Central <cubecent...@gmail.com> wrote: > >> Hi Max! Thanks for the information, I was wondering if you had documented >> what you did to your Raspberry Pi so that it might be reproducible to >> someone like me (a newcomer time-nut and intermediate Linux user) ... you >> had said: >> >>>> "Here is what I have been able to do with a Motorola Oncore UT+ that I got >>>> from Bob Stewart awhile back. This is with a Raspberry PI 2 with a number >>>> of tweaks and a custom compiled kernel. Nothing too drastic... plus the >>>> current Dev version of NTP compile on the Raspberry PI." >> >> What tweaks? What options have you compiled? What are the gritty details >> of your setup? >> >>>> "I'm getting better results letting ntpd discipline the clock over doing >>>> kernel discipline... >> not surprising because the algorithms in the ntpd code are much more >> sophisticated than the Linux kernel pps code... ntpd discipline provides >> much lower jitter in my experience." >> >> what setting is this and how might I go about experimenting with it? Is >> that the "flag3" option in the "Generic NMEA GPS Receiver" documented here? >> https://www.eecis.udel.edu/~mills/ntp/html/drivers/driver20.html >> >> <snip> >> >>>> "Not too shabby for a killer deal on an Oncore UT+ for $5 from Bob! I'm >>>> running the PPS out of the UT+ through a level converter to get the ~3.3v >>>> PPS output... the serial output on the UT+ is also going through a level >>>> converter direct into the Pi 2. Using the oncore 127.127.30.0 ntpd driver >>>> and again, i'm not using hardpps kernel discipline." >> >> I see word HARDPPS in the driver you mentioned >> (https://www.eecis.udel.edu/~mills/ntp/html/drivers/driver30.html ) but that >> documentation is a bit scarce... Could you fill me in on how you have it set >> up? Is the PPSAPI also used for the "Generic NMEA GPS Receiver" (driver 20) >> or the PPS driver (driver 22)? >> >> Thanks so much for your assistance! Sorry if these questions have been >> posted before, but I am very curious about your setup as it nearly matches >> mine! >> >> -Randal "r3" of CubeCentral >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
