[time-nuts] GR 1115B update
Hi The 1115 seems to be settling in nicely. It's down to 5x10^-10 / day and the rate is still decreasing. Smooth monotonic positive aging so far. It's been on power for just over 2 weeks, so it's well within it's original "30 days to 5x10^-10" spec. I also came across a highly important piece of information in the GR archives: A certain William J Riley Jr is listed as "Development Engineer" in the Frequency Group at GR in 1965. That means I now have someone to blame if anything goes wrong :)... Of course since it's still running fine after 45 years, it probably means that I owe Bill a beer. Bob ___ 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.
Re: [time-nuts] GR 1115B
Hi It's an early Warner resonator so stress is an issue. It is drifting in the right direction. I am also worried that the tuning coil may be tough to replace. I've seen them get pretty fragile after baking for years and years. Wait and see sounds like a good plan. Thanks Bob On Jul 31, 2010, at 11:11 PM, "Max Robinson" wrote: > First I suggest you let it run for a couple of weeks to see if it will come > into range. It can take time for moisture to be driven out and stresses to > be relieved. > > If you have to go into it, it comes apart very easily. Just be very careful > not to break the flask. You probably couldn't get a replacement. > > Regards. > > Max. K 4 O D S. > > Email: m...@maxsmusicplace.com > > Transistor site http://www.funwithtransistors.net > Vacuum tube site: http://www.funwithtubes.net > Music site: http://www.maxsmusicplace.com > > To subscribe to the fun with transistors group send an email to. > funwithtransistors-subscr...@yahoogroups.com > > To subscribe to the fun with tubes group send an email to, > funwithtubes-subscr...@yahoogroups.com > > - Original Message - From: "Bob Camp" > To: "Discussion of precise time and frequency measurement" > > Sent: Saturday, July 31, 2010 11:54 AM > Subject: [time-nuts] GR 1115B > > >> Hi >> >> The 1115B got here yesterday. It seems to work pretty well. Not to >> surprisingly it's drifted a bit over the last 35 years. It's right at one >> end of it's 2.7x10^-7 tune range. >> >> From what I can see in the manual there's an adjustment on the crystal board >> that might bring it back onto frequency. Since getting there involves >> disassembling the dewar flask / oven combination I'm a little hesitant to >> dive right in. Has anybody torn into one of these before? If so what am I >> likely to run into? Everything I can see is wide open and very easy to work >> on. I'm hoping the oven is built the same way. >> >> Thanks! >> >> Bob >> ___ >> 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.
Re: [time-nuts] GR 1115B
First I suggest you let it run for a couple of weeks to see if it will come into range. It can take time for moisture to be driven out and stresses to be relieved. If you have to go into it, it comes apart very easily. Just be very careful not to break the flask. You probably couldn't get a replacement. Regards. Max. K 4 O D S. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with transistors group send an email to. funwithtransistors-subscr...@yahoogroups.com To subscribe to the fun with tubes group send an email to, funwithtubes-subscr...@yahoogroups.com - Original Message - From: "Bob Camp" To: "Discussion of precise time and frequency measurement" Sent: Saturday, July 31, 2010 11:54 AM Subject: [time-nuts] GR 1115B Hi The 1115B got here yesterday. It seems to work pretty well. Not to surprisingly it's drifted a bit over the last 35 years. It's right at one end of it's 2.7x10^-7 tune range. From what I can see in the manual there's an adjustment on the crystal board that might bring it back onto frequency. Since getting there involves disassembling the dewar flask / oven combination I'm a little hesitant to dive right in. Has anybody torn into one of these before? If so what am I likely to run into? Everything I can see is wide open and very easy to work on. I'm hoping the oven is built the same way. Thanks! Bob ___ 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.
Re: [time-nuts] GR 1115B
Not personally, but try the GenRad Group on Yahoo. Best, -John = > Hi > > The 1115B got here yesterday. It seems to work pretty well. Not to > surprisingly it's drifted a bit over the last 35 years. It's right at one > end of it's 2.7x10^-7 tune range. > > From what I can see in the manual there's an adjustment on the crystal > board that might bring it back onto frequency. Since getting there > involves disassembling the dewar flask / oven combination I'm a little > hesitant to dive right in. Has anybody torn into one of these before? If > so what am I likely to run into? Everything I can see is wide open and > very easy to work on. I'm hoping the oven is built the same way. > > Thanks! > > Bob > ___ > 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] GR 1115B
Hi The 1115B got here yesterday. It seems to work pretty well. Not to surprisingly it's drifted a bit over the last 35 years. It's right at one end of it's 2.7x10^-7 tune range. >From what I can see in the manual there's an adjustment on the crystal board >that might bring it back onto frequency. Since getting there involves >disassembling the dewar flask / oven combination I'm a little hesitant to dive >right in. Has anybody torn into one of these before? If so what am I likely to >run into? Everything I can see is wide open and very easy to work on. I'm >hoping the oven is built the same way. Thanks! Bob ___ 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.
Re: [time-nuts] GR 1115B
Hi I have (thanks to a kind fellow list member) obtained a manual scan for the 115B Thanks! Bob On Jul 24, 2010, at 9:38 AM, Bob Camp wrote: > Hi > > My impression is that a lot of these guys put up a list of "everything and > anything on the planet" so the search engines find them. > > Still no luck on a free download manual. I may actually have to buy the GR > cdrom. > > Bob > > > On Jul 24, 2010, at 4:53 AM, K. Szeker wrote: > >> Sorry Bob, >> but the home addresse is working: >> http://www.imltest.com/ >> I found a very long listing on "inventory" yesterday, it was me only not >> full clear if its a real listing of "manual s to have" or they does serve >> repairing for the mentioned types... >> K. >> >> 2010/7/24 K. Szeker >> >>> Hi Bob, >>> >>> Raeser service repairs it_hopefuly have some documentations too? >>> http://www.raeservices.com/product-detail.asp?search=67241 >>> Seems; they have a manual too? http://www.imltest.com/inventory. >>> >> >>> Karesz >>> >>> 2010/7/24 Bob Camp >>> >>> Hi A GR 1115B seems to be headed this way. I have no idea what condition it's in. About all I have been able to find is the GR news article on the unit from 1961(?). Does anybody have a schematic or manual? Thanks! Bob ___ 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. > ___ 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.
Re: [time-nuts] GR 1115B
Hi My impression is that a lot of these guys put up a list of "everything and anything on the planet" so the search engines find them. Still no luck on a free download manual. I may actually have to buy the GR cdrom. Bob On Jul 24, 2010, at 4:53 AM, K. Szeker wrote: > Sorry Bob, > but the home addresse is working: > http://www.imltest.com/ > I found a very long listing on "inventory" yesterday, it was me only not > full clear if its a real listing of "manual s to have" or they does serve > repairing for the mentioned types... > K. > > 2010/7/24 K. Szeker > >> Hi Bob, >> >> Raeser service repairs it_hopefuly have some documentations too? >> http://www.raeservices.com/product-detail.asp?search=67241 >> Seems; they have a manual too? http://www.imltest.com/inventory. >> > >> Karesz >> >> 2010/7/24 Bob Camp >> >> Hi >>> >>> A GR 1115B seems to be headed this way. I have no idea what condition it's >>> in. About all I have been able to find is the GR news article on the unit >>> from 1961(?). Does anybody have a schematic or manual? >>> >>> Thanks! >>> >>> Bob >>> ___ >>> 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.
Re: [time-nuts] GR 1115B
Sorry Bob, but the home addresse is working: http://www.imltest.com/ I found a very long listing on "inventory" yesterday, it was me only not full clear if its a real listing of "manual s to have" or they does serve repairing for the mentioned types... K. 2010/7/24 K. Szeker > Hi Bob, > > Raeser service repairs it_hopefuly have some documentations too? > http://www.raeservices.com/product-detail.asp?search=67241 > Seems; they have a manual too? http://www.imltest.com/inventory. > > Karesz > > 2010/7/24 Bob Camp > > Hi >> >> A GR 1115B seems to be headed this way. I have no idea what condition it's >> in. About all I have been able to find is the GR news article on the unit >> from 1961(?). Does anybody have a schematic or manual? >> >> Thanks! >> >> Bob >> ___ >> 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.
Re: [time-nuts] GR 1115B
The manual scan is available from the GR Historical Society. There is a very extensive list of their offerings in the "Files" section of the GenRad Group on YahooGroups. -John === > Hi > > THe second link seems to be broke. The first one works fine. > > Thanks! > > Bob > > > On Jul 23, 2010, at 8:06 PM, K. Szeker wrote: > >> Hi Bob, >> >> Raeser service repairs it_hopfuly have some documentations too? >> http://www.raeservices.com/product-detail.asp?search=67241 >> Seems; they have a manual too? http://www.imltest.com/inventory. >> >> Karesz >> >> 2010/7/24 Bob Camp >> >>> Hi >>> >>> A GR 1115B seems to be headed this way. I have no idea what condition >>> it's >>> in. About all I have been able to find is the GR news article on the >>> unit >>> from 1961(?). Does anybody have a schematic or manual? >>> >>> Thanks! >>> >>> Bob >>> ___ >>> 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. > > ___ 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.
Re: [time-nuts] GR 1115B
Hi THe second link seems to be broke. The first one works fine. Thanks! Bob On Jul 23, 2010, at 8:06 PM, K. Szeker wrote: > Hi Bob, > > Raeser service repairs it_hopfuly have some documentations too? > http://www.raeservices.com/product-detail.asp?search=67241 > Seems; they have a manual too? http://www.imltest.com/inventory. > > Karesz > > 2010/7/24 Bob Camp > >> Hi >> >> A GR 1115B seems to be headed this way. I have no idea what condition it's >> in. About all I have been able to find is the GR news article on the unit >> from 1961(?). Does anybody have a schematic or manual? >> >> Thanks! >> >> Bob >> ___ >> 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.
Re: [time-nuts] GR 1115B
Hi Bob, Raeser service repairs it_hopfuly have some documentations too? http://www.raeservices.com/product-detail.asp?search=67241 Seems; they have a manual too? http://www.imltest.com/inventory. Karesz 2010/7/24 Bob Camp > Hi > > A GR 1115B seems to be headed this way. I have no idea what condition it's > in. About all I have been able to find is the GR news article on the unit > from 1961(?). Does anybody have a schematic or manual? > > Thanks! > > Bob > ___ > 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] GR 1115B
Hi A GR 1115B seems to be headed this way. I have no idea what condition it's in. About all I have been able to find is the GR news article on the unit from 1961(?). Does anybody have a schematic or manual? Thanks! Bob ___ 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.
