I got into the package out of the dewar of my FTS 1200-100 without breaking it:
https://photos.google.com/share/AF1QipPxJF0Fn6_ gSjXQzk3OhoAhvgqizxmo4A41bIdyk8FrpkNIOfW5Q5feLwLsO4od8Q?key= NmRRejU0eEYtVUQ4ZURTMnE4cXZEOWtIVmtQZTZB -ch 73 de AI6KG On Tue, Dec 12, 2017 at 3:50 PM, Magnus Danielson < mag...@rubidium.dyndns.org> wrote: > Hi Ed, > > Thanks for the pictures. I had to change the dewar flask on one of mine, > so I saw about the same thing some 10 years ago or so, but memory. > Didn't go all the way into the oscillator. > > The oscillator picture is mirrored. > > Cheers, > Magnus > > > On 12/12/2017 06:32 PM, Ed Palmer wrote: > >> It sounds like yours is different from my 8601. How old is yours? From >> the label inside it looks like mine is from 1983. >> >> Internal pictures are here: >> >> http://s701.photobucket.com/user/edpalmer42/library/Oscilloq >> uartz%208601%20Oscillator >> >> If you click on 'view as story' you'll see some comments that I added to >> the pictures. >> >> Ed >> >> On 2017-12-12 11:00 AM, <ulf_...@yahoo.com> wrote: >> >>> Emailed Oscilloquartz that now has another name: Advaoptical... This in >>> my capacity as aresearch engineer at Onsala Space Observatory.And the >>> oscillator is at my work bench. Nothingprivate/hobby about this. >>> The answer was that since we do not have a service agreement,they would >>> not disclose any information. >>> (Compare this with Keysight who has a free downlad area for oldmanuals. >>> IMO the Keysight approach benifits their businessin the long term). >>> So... >>> I went along and started to dissassemble the 8600-3. >>> The outer case was easy. Inside is a PCB with RF buffersand temperature >>> regulation circuitry. >>> Then there is a thermo bottle with the ovenized oscillator.This unit is >>> connected to the PCB using two flex cables. >>> The oscillator unit can simply be extracted from thebottle using an >>> Metric 3 mm screw lightly screwed inone of the holes in the oscillator >>> assembly. >>> The assembly can be accessed by carfully unscrewingthe flex-cable end >>> from the other mechanics. No needto touch the three small screws at the lid. >>> Now it is starting to get intersting. I have not foundthe RF wiring into >>> the crystal. The PCB in this unitseems to deal only with temperature >>> regulation.Possibly, the RF is routed together with some heaterwinding. >>> Or the crystal and the oscillator parts is sealedin such a way that >>> there will be no wayto dissassemble it. There are several thermistorsglued >>> inside to various parts of the oscillator/ovenassembly. That will make any >>> further attemptsdifficult as the connecting wires are thin and delicateif >>> they needs to be unsoldered. >>> The construction is a nice piece of engineering.I'll give them that. >>> Right now, I cannot see any typical oscillatorcircuitry (pF, nH, RF >>> transistors) etc. >>> I think I'll contemplate on the next movefor a day or so... >>> >>> Ulf Kylenfall >>> >>> >>> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/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/m > ailman/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.