Hi Based on the one I have here, if it’s been off “a while” it could easily take 6 months to settle in. The good news is that after a year or so it should do quite well.
Bob > On Aug 1, 2021, at 3:56 PM, Skip Withrow <[email protected]> wrote: > > Hello Time-Nuts, > > I am giving away a General Radio 1115-C 5Mhz Standard Frequency > Oscillator for a friend. All I ask is the cost of shipping, or it can > be picked up in Denver, CO. > > Unit comes with a manual (you can view it on KO4BB.com or BAMA boat > anchor site), one GR874 to BNC adapter, MIL accessory connector for > 24V and EFC input, and IEC power cord. > > Crystal is a Bliley BG61A-5 (AT cut). Oscillator uses a copper oven > inside glass dewar, all foamed-in-place in an aluminum box that plugs > into the main chassis. I have verified that the oven is on > temperature (76.4C indicated on xtal). The oscillator was way low and > I changed a couple of caps to bring it back in range. The dead NiMH > backup battery has been removed. The power connector has been changed > to an IEC type. > > After about 5 weeks the drift is 5.5x10E-10/day and still falling. > So, it does not currently meet the 1115-C spec, but does come close to > the 1115-B spec (but who knows how long this unit has been in > storage). > > Good beginner unit. There is external EFC control, so could be used > to build a GPSDO. Unit is 3U rack mount and weighs about 32 pounds. > > If interested please contact me off line at the above address. > > Thanks, > Skip Withrow > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
