As much as the pictures are interesting the sites blasting out crazy amounts of ads Totally a problem. Touch anyone of them and off you go to whatever it was. Regards Paul WB8TSL
On Tue, Dec 12, 2017 at 12:32 PM, Ed Palmer <[email protected]> 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, <[email protected]> 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 -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/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.
