Some nice ones here -- google for: cesium beam tube /tvb (iPhone)
> On Sep 24, 2013, at 9:40 AM, "Tom Miller" <[email protected]> wrote: > > Sure be nice if you could put them up on some photo site and let us see them. > > > ----- Original Message ----- From: "ewkehren" <[email protected]> > To: <[email protected]> > Sent: Tuesday, September 24, 2013 12:28 PM > Subject: Re: [time-nuts] HP5061B Beam Tubes > > >> Did send Bill some pictures off list >> Bert >> >> >> >> >> Sent from Samsung tabletpaul swed <[email protected]> wrote:I have numbers >> of pix. Each is 2 MB so need another way to handle it. >> You will get a good feel from the pictures what I did. Schematic is paper. >> Lots of notes I would have to re-decode. It was Oct 2011. >> Regards >> Paul >> WB8TSL >> >> >>> On Mon, Sep 23, 2013 at 8:14 PM, wb6bnq <[email protected]> wrote: >>> >>> Hi Bert, >>> >>> Any chance of some high resolution photos ? >>> >>> Bill....WB6BNQ >>> >>> >>> >>> [email protected] wrote: >>> >>> Twelve years ago I did disassemble a regular and a high performance >>>> tube, the only negative effect was I joined time nuts. The guts still >>>> decorate my window sill. The only parts inside that may be temperature >>>> sensitive are some copper wires with a clear coating. Every thing else is >>>> metal or ceramic. >>>> Bert Kehren >>>> >>>> >>>> In a message dated 9/23/2013 5:44:22 P.M. Eastern Daylight Time, >>>> [email protected] writes: >>>> >>>> I've always wanted to try baking the entire tube to vaporize any >>>> accumulations of Cs metal outside the internal oven. Is that what you >>>> did, >>>> Paul? If some of the free cesium metal near the detector can be >>>> recondensed >>>> at the oven end, or just redistributed uniformly throughout the tube, it >>>> might render a noisy tube usable again. >>>> >>>> The point at which cesium vaporizes is 250C / 482F, and that seems like >>>> it >>>> could be survivable unless there are thermoplastic structures or >>>> insulation >>>> sleeves inside the tube for some reason. The operation might be tricky, >>>> because while you wouldn't want to heat the tube sufficiently to vaporize >>>> all of the remaining cesium in the internal oven, you would also need to >>>> bake the tube for quite some time to heat its internal structures >>>> uniformly, >>>> since it's basically a vacuum bottle. Outgassing from various internal >>>> materials and structures would also be a concern. Something to try with >>>> a >>>> tube that is otherwise ready for the scrap heap... >>>> >>>> -- john, KE5FX >>>> Miles Design LLC >>>> >>>> >>>> >>>>> -----Original Message----- >>>>> From: [email protected] [mailto:time-nuts- >>>>> [email protected]] On Behalf Of paul swed >>>>> Sent: Monday, September 23, 2013 12:52 PM >>>>> To: Discussion of precise time and frequency measurement >>>>> Subject: Re: [time-nuts] HP5061B Beam Tubes >>>>> >>>>> Tom >>>>> I added 10 degrees and used the built in temp sensor in the tube as a >>>>> gauge. So its sort of accurate to say 10 degrees. I remember evaluating >>>>> >>>>> >>>> the >>>> >>>> >>>>> temp several ways. >>>>> I did not return it to original temp as I believed at the time I was >>>>> >>>>> >>>> baking >>>> >>>> >>>>> out the last few Cs. >>>>> What your saying in the threads very interesting. But don't have time to >>>>> >>>>> >>>> go >>>> >>>> >>>>> back and adjust or reconnect the old oven controller. I would have to >>>>> >>>>> >>>> look >>>> >>>> >>>>> at all of that again to see whats needed. I did this about 2 years ago >>>>> >>>>> >>>> its >>>> >>>> >>>>> in the time nuts archive I suspect. >>>>> Regards >>>>> Paul. >>>>> >>>>> >>>> >>>> ______________________________**_________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/** >>>> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/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<https://www.febo.com/cgi-bin/mailman/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<https://www.febo.com/cgi-bin/mailman/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. >> _______________________________________________ >> 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. > > _______________________________________________ > 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. _______________________________________________ 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.
