The scans look good on the website. Thanks for the lead Tom. I still like collecting the original manuals for devices I have. You're right sometimes harder to find than the gear is!
Bill On Sun, Dec 6, 2020, 6:10 AM Tom Van Baak <t...@leapsecond.com> wrote: > Nice find. Original manuals are sometimes harder to find than original > equipment. In the case of the Varian R20 there is a clean copy on fellow > time-nut Didier's website: > > http://www.ko4bb.com/manuals > > Search for Varian or R20. The 128 page file is: > > Varian_R20_Rubidium_Frequency_Standard_Service_Manual_1966.pdf > > See how your hardcopy compares with that PDF. FYI, there is a nice > history of Rb standards here: > > "A History of the Rubidium Frequency Standard" > > http://www.wriley.com/A%20History%20of%20the%20Rubidium%20Frequency%20Standard.pdf > > /tvb > > > On 12/6/2020 3:24 AM, Ulf Kylenfall via time-nuts wrote: > > Gentlemen. > > I have salvaged a manual for a Varian R-20 Rubidium Frequency Standard. > > > > It was left when my employer borrowed such a unit when > > performing the first cross-atlantic VLBI Experiments > > some time in the late 70's. The unit must have been returned to its > > owner but they forgot to include the manual... > > > > It is in excellent shape. > > > > Are there any such units still in operation? > > Is there a need for it? The thickness of the papers > > is about 1 inch. Most pages are easy enough to scan but the > > last 1/3rd is fold-out schematics for which I have no > > appropriate way to scan. > > > > Best Regards > > > > Ulf Kylenfall > > SM6GXV > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.