Re: [time-nuts] Weird Stuff WareHouse shutting down

Responding to Jim's post ( I can't find his original post), a significant advantage to owning "vintage" instruments is that, in general, they may be repaired more easily than later model instruments. This fact was my guiding principle when setting up my lab, and that was based on Jim Williams'

Re: [time-nuts] Introduction ... HP 3586

I concur. That is a great write-up on the 3586. However, note that there are at least three revisions of that document (version 2.0, 2004, version 2.1, 2007 and 2.2, 2007). Version 2.1 (at least in the copy that I have) is missing the front panel figures in section 4 and the schematic figures

Re: [time-nuts] Heathkit GC 1000 Most Accurate Question

Hi, Bill. I have three GC-1000s, one unbuilt and two built. Both of the built radios have stopped showing a time display. I haven't had a chance to figure out what happened to them. I live very close to Fort Collins, CO. I experience power failures fairly often and when my clocks were

Re: [time-nuts] HP nixie counters, free!

Scott, Do you have any plugins for the 5245Ls? DaveD Sent from a small flat thingy > On Jan 5, 2018, at 11:10, David Scott Coburn wrote: > > Hi All, > > I have some old HP nixie tube counters (5245Ls) which I would like to give > away to a good home. See the

Re: [time-nuts] Phase Noise Modeling in SPICE

With respect to your first question, I subscribe to MWJ and, after a modest amount of looking on the web, find that the MWJ archives seem to go back only as far as 2002. I was unable to locate a copy of the 1988 paper elsewhere on the web, which seems strange. Perhaps someone out there has a

Re: [time-nuts] HP8640

There is, or was, a member of the Yahoo hp_agilent forum who was making metal replacement gears for the HP8640. I believe several members replaced the plastic gears with the new metal ones and were able to bring their instruments back to life. DaveD On 6/7/2017 8:56 AM, Bert Kehren via

Re: [time-nuts] Machining some aluminum help!

This is fairly easy to do on a vertical mill, but it can be done using a drill press. I would machine and drill the end plates first. Then I would use hot-glue or double-sided tape to attach one of the end plates to the tube ends and use the end plate as a drilling guide to drill and tap the

Re: [time-nuts] PLL Digital Loop Filter

Roland Best, "Phase Locked Loops". I see from Amazon that it is up the 6th edition. I think I have the 3rd edition. https://www.amazon.com/Phase-Locked-Loops-Simulation-Applications/dp/0071493751/ref=sr_1_1?ie=UTF8=1490121310=8-1=best+phase+locked+loops I took a PLL class at StorageTek a while

Re: [time-nuts] that's really awesome

I treated that email as spam and deleted it. DaveD On 6/22/2016 9:07 AM, Chuck Harris wrote: I can't imagine anyone following a link that is presented in this way. I love a lot of things, how about telling me why, as a time-nut, that I should love it? As it is, this looks just like many,

Re: [time-nuts] Looking for a Linux user with a Z3816/Z3815/HP5xxxx

You can just remove the .exe extension on the file and have the recipient add it back on once the file is received. DaveD On 5/23/2016 1:42 PM, Mark Sims wrote: I have added some code to Lady Heather to talk to SCPI GPSDOs (also Motorola, Ublox, and NMEA) and am looking for a guinea pig to

Re: [time-nuts] Looking for OCXO

Reed Dickinson sells a small oscilloscope calibrator that is well suited for checking 'scope operation "in the field", at hamfests or when stumbles across a seemingly nice 'scope in the local electronics store. It is a very nice, compact instrument. See

Re: [time-nuts] Digital Phasae Lock Loops

Roland Best's text is the best (no pun intended) one I have seen on PLLs. I didn't know it was up to a sixth edition. On 10/16/2015 11:18 AM, Alexander Pummer wrote: Hi Steve, I will tell you a big secret; a digital PLL is not a low phase noise system and a very good introduction to PLLs and

Re: [time-nuts] Digital Phasae Lock Loops

t the Best book os a very good introduction 73 Alex On 10/16/2015 1:42 PM, Dave Daniel wrote: Roland Best's text is the best (no pun intended) one I have seen on PLLs. I didn't know it was up to a sixth edition. On 10/16/2015 11:18 AM, Alexander Pummer wrote: Hi Steve, I will tell you a

Re: [time-nuts] magnetic electronic components

Some other books which are good are: Applications of Magnetism, Watson Electromagnetic Device, Roters Magnetic Properties of Materials, Smit (ed.) Transformer Design Handbook, McLyman (I'm not sure if I have the author correct on this one, but it is a classic) Introduction to Ferromagnetism,

Re: [time-nuts] potential source for cheap copy of labview

. DaveD On 6/20/2015 7:18 PM, Jim Lux wrote: On 6/20/15 3:03 PM, Dave Daniel wrote: I wish the MathWorks would resume that practice. Back in the late 90s they would sell one licenses for MatLab and SimuLink for an affordable price if one singed an agreement that restricted one to personal

[time-nuts] HP 3586A documents

I have recently acquired a used HP 3586A. Awhile back, in 2013, there was a thread that discussed the availability of Mr. Bill Feldman's A PRACTICAL GUIDE FOR USING THE HP3586A.pdf, which I have found on the BAMA website. However, as pointed out in the earlier thread, the schematics for the

Re: [time-nuts] Tektronix Sample Heads

You also might want to look in the Sampling Oscilloscope Circuits book from the Tektronix Circuit Conceptsseries. DaveD On 4/27/2015 8:26 AM, Ivan Cousins wrote: There is another source of information that is available. Try looking up US patents US4755742 US4678345 US4727340. These explain

Re: [time-nuts] GPS position averaging

I am new to this list and to this topic, but it seems to me that if one wants to come up with an average of a set of spatial measurements, one would use distance as the parameter to be averaged. The distance would presumably be that from a fixed spatial reference point (0,0,0). One would then

Re: [time-nuts] Which First GPSDO to buy?

Well, thanks, everyone, for the information. I appreciate the help. First, I am presently not up to adding another project to my long list of projects. I get whiplash every time I walk into the lab. Building a GPSDO sound like fun. Perhaps down the line. I figured I should add some

Re: [time-nuts] Which First GPSDO to buy?

one of each. This is precisely how I ended up with thirteen Tektronix oscilloscopes. It's the same process. And right in the middle of Christmas gift-buying season. A very useful summary. Thanks! DaveD Bob On Dec 14, 2014, at 12:49 PM, Dave Daniel kc0...@gmail.com wrote: Well, thanks

[time-nuts] Which First GPSDO to buy?

All, As a relative newcomer to this list, I have been reading the posts concerning GPSDOs. I have what I hope is a simple question. For a newcomer to this field, which GPSDO would be better to purchase as a first-time acquisition: - This LUCENT/SYMMETRICOM Z3810AS, KS24361 L101/L102,

Re: [time-nuts] ks... answers The emails are getting long

I remember the Fast and Damn Fast Buffer Amp data sheet. LH0036? I may not be remembering the correct part number. I used to have a copy of that data sheet, as well as another that was labeled DC to Daylight on the data sheet. DaveD On 11/19/2014 2:42 PM, Mike Feher wrote: Hi Doug - Wow.

Re: [time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle

Is that the A Two Diode Frequency Doubler article by John Pivnichny? DaveD On 11/12/2014 10:47 PM, Don Latham wrote: I digitized the first 2011 article to hand, the one in Jan-Feb; it's a smaller article, and not as elegant as the later one. Anyone interested can email me off-list. You're

Re: [time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle

I believe I have a PDF copy of the article if anyone wants it. It's about 1.3 MB in size. DaveD On 11/12/2014 2:36 PM, Don Latham wrote: It's interesting. I took the hint, and tried sin(a)*sin(b) expand and set b=a+pi/2. fun fun fun. All that's needed in theory is a mixer and a pi/2 phase

Re: [time-nuts] HOW WE GOT TO NOW WITH STEVEN JOHNSON | Time An Inside Look | PBS

I just heard about this book on NPR. On 10/25/2014 12:51 PM, Brooke Clarke wrote: Hi: I don't have TV and wonder if anyone who has PBS can comment on this program? preview at: https://www.youtube.com/watch?v=RhDvGhFbpq8 ___ time-nuts mailing

Re: [time-nuts] 10811 Thermal fuse?

I believe a thermal cut-out is a device which interrupts the circuit when a prescribed temperature is reached or exceeded (in some cases by heating from an increase in current through a conductor), but which re-connects the circuit once the temperature has dropped below the cut-out

Re: [time-nuts] Tektronix TM500 extender cable kit

Several people on the TekScopes/Tekscopes2 forums went through this a while back. It turned out that ribbon cable appropriate for this application was either not available or too expensive. John Griessen made a set of PWBs and sold kits consisting of a PWB pair, a connector pair and a set of

Re: [time-nuts] Synergy-GPS SSR-6tru Problem Resolved

I will say that I was very impressed by the email that Art sent; I do not see very many communications that are as honest as that any more. Most people who are not engineers do not understand the diligence that is required to ensure that one's daily mistakes in architecture, design and