Re: [time-nuts] Dropbox is cool, but...

I've had similar results with LTSpice, by default it tosses the simulations results to the current working directory. Fortunately, you can tell LTSpice to use a specific temp folder for simulation results. On Sun, Feb 5, 2017 at 7:42 PM, Didier Juges wrote: > Yes, I noticed

Re: [time-nuts] Dropbox is cool, but...

On 05-Feb-17 16:42, Didier Juges wrote: > Yes, I noticed that before. > I have a number of tools that don't like running off a Dropbox folder, > including several software development tools for starter. Too many files > opened at the same time. > Don't assume that because it looks like a normal

Re: [time-nuts] What interrupts aging?

Hi Nothing in life is perfect :) Diffusion of ions in the lattice is one of the more obscure sources of aging. It is maybe number 10 or 15 on the list. The exception to that would be high radiation environments where you have energetic particles trying to knock things around. A similar (but

Re: [time-nuts] What interrupts aging?

I am curious: is the quartz in a high quality quartz crystal perfect? That is; is the crystalline lattice perfect, without flaws or impurities? I assume that the quartz is grown in a furnace, can we grow perfect quartz crystals? Pete. On 2/5/2017 6:31 PM, Bob Camp wrote: Hi Aging

Re: [time-nuts] What to do with a 5061A/5061B with dead NiCds

Hi, These days, NiCd cost us a lot here in Europe as Cadmium is something they want out of the market. Kind of not so nice for health. Still available thought. I avoided loading NiCd into stuff from pure cost. PHK would vote for lead-batteries. I use LIPO(Fe) for portable stuff. Cheers,

Re: [time-nuts] What to do with a 5061A/5061B with dead NiCds

it is a "ventilated flooded" battery? 73 if it s a flooded battery it is very easy to fix it On 2/5/2017 3:27 PM, Skip Withrow wrote: Hello time-nuts, I have 5061A and 5061B units with the battery option and dead battery packs. My question is what makes the most sense when refurbing these

Re: [time-nuts] What to do with a 5061A/5061B with dead NiCds

Skip, I've rebuilt the NiCd battery packs with tabbed half D NiCd cells that are about $5 each (with tabs, shipped) and it takes 20 of them and some time to disassemble the pack and solder the new cells together. They will eventually die and you will have to replace them again. The half D

Re: [time-nuts] Dropbox is cool, but...

Yes, I noticed that before. I have a number of tools that don't like running off a Dropbox folder, including several software development tools for starter. Too many files opened at the same time. Don't assume that because it looks like a normal folder, it works like one, even though for many

Re: [time-nuts] What to do with a 5061A/5061B with dead NiCds

HI Unless you are in a *very* unusual location, put it on a UPS. Bob > On Feb 5, 2017, at 6:27 PM, Skip Withrow wrote: > > Hello time-nuts, > > I have 5061A and 5061B units with the battery option and dead battery > packs. My question is what makes the most sense

Re: [time-nuts] What to do with a 5061A/5061B with dead NiCds

I don't know which option would be best, but rebuilding the pack may not be expensive. A rebuilt NiCad pack for a Flukemeter only cost me $12. Fluke charges $120 for a new one. On Feb 5, 2017 4:27 PM, "Skip Withrow" wrote: > Hello time-nuts, > > I have 5061A and 5061B

Re: [time-nuts] What interrupts aging?

John wrote: We know of OCXO that have been continuously running for years and have exceptional aging, supposedly as a result. What does it take to interrupt that? A momentary loss of power? The oven cooling down? Some long period of off-time? Or, once the oscillator has baked in will it

Re: [time-nuts] What interrupts aging?

Hi Aging can be caused by many things. Stress on the blank (and can and leads and plating and …) is one source. There are good reasons to believe that quartz vs metal stress can take > 1 month to settle out to the 90% level. Particle (think borders down to atoms) equilibrium inside the can is

[time-nuts] What to do with a 5061A/5061B with dead NiCds

Hello time-nuts, I have 5061A and 5061B units with the battery option and dead battery packs. My question is what makes the most sense when refurbing these units? 1. Yank the old battery out and just leave it that way. Running the unit on a UPS would preserve the functionality. 2. Replace

Re: [time-nuts] Dropbox is cool, but...

Yep, I can see where that would be an issue Use an un-synced directory/folder and them back up to dropbox off-air if required... :) __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 2/5/2017 2:17 PM, John Ackermann N8UR wrote: > So I was clever and decided to

Re: [time-nuts] What interrupts aging?

Hi John, My experience, which is far from scientific, is that any disturbance to the Trimbles I use is like a slap in the face.  It can be just a momentary power loss or a large change in the EFC.  After either of these events, it goes into some period of retrace before it settles back down. 

[time-nuts] What interrupts aging?

We know of OCXO that have been continuously running for years and have exceptional aging, supposedly as a result. What does it take to interrupt that? A momentary loss of power? The oven cooling down? Some long period of off-time? Or, once the oscillator has baked in will it return to that

[time-nuts] Dropbox is cool, but...

So I was clever and decided to log some PPS data to a folder within my "Dropbox" folder. Strange results followed... the whole system just bogged down, and even fairly slow serial data dropped characters. It turns out that the culprit was the Dropbox daemon continuously trying to sync the

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

To add in some small manner to what Bob Camp said: IIRC, the input is polarity protected by a diode or two.  I think the input to the brick is floated; i.e. neither of the two power leads is connected to ground.  The brick can be disassembled, if you're careful.  The components, except for the

Re: [time-nuts] information about the Austron Synchronous Filter 2090A

In message , Ruslan Nabioullin writes: >On 02/05/2017 02:58 AM, Poul-Henning Kamp wrote: >> I belive [sic] the idea is that if you have two Loran-C receivers >> tracking two different GRIs, the 2090A can blank out the strongest >> stations

Re: [time-nuts] information about the Austron Synchronous Filter 2090A

Hi Best guess - it was intended for use in close proximity to a Loran chain transmit site. The Austron Loran receivers only had about a 100 db dynamic range. If you needed to operate close to a transmitter … that’s not enough. Bob > On Feb 5, 2017, at 3:20 AM, Ruslan Nabioullin

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

See https://www.febo.com/pipermail/time-nuts/2014-October/087670.html Pin 1 is Plus, pin 2 is Minus to an isolated power supply. All other pins have no connection. Hence, no damage. Schematics are not available, but many people have discovered what it takes to make them work. Time nuts is an

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

There's a surface-mount fuse on the back of the board. But pin 3 seems to show no leakage to other pins. I'd be surprised if connecting it has caused any damage. Have you tried reconnecting it correctly ? On Sun, Feb 5, 2017 at 3:53 PM, Bob Camp wrote: > Hi > > The power

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

Hi The power “brick” is a pretty standard Lucent part. The show up from time to time on the surplus market. The gotcha is that you may be able to buy a KS box for less than the asking price for the power brick. There are no schematics on these devices other than what some people have traced

Re: [time-nuts] information about the Austron Synchronous Filter 2090A

On 02/05/2017 02:58 AM, Poul-Henning Kamp wrote: I belive [sic] the idea is that if you have two Loran-C receivers tracking two different GRIs, the 2090A can blank out the strongest stations [sic] pulses for the weaker chains [sic] receiver. So it functions sort of as a preselector, one whose

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

Am 05.02.2017 um 04:29 schrieb Hal Murray: b...@baylorhill.com said: Where does pin three (P1) connect. I may have trashed both units. Are schematics available. I don't know of any schematics. I would take it apart and see if anything is connected to any of the other pins on those

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

Hi For NTP grade timing, there are still a lot of broadcast sources out there. You *do* need to be careful about propagation and when to (not) use them during the day. Focusing effort on that part of it is probably more useful than waiting for funding to appear for eLoran…. Bob > On Feb 4,

[time-nuts] re.Eloran test

Fyi if anyone cares, I have no trouble receiving WildWood NJ. here in northern Indiana, on my FS700s, Austron 2100Fs and Icom IC-725 et.al.. Using a Burhans design active antenna with an eight foot whip, easy S9 signals when they're running. I just can hardly wait until they bring Dana IN. on

Re: [time-nuts] information about the Austron Synchronous Filter 2090A

In message <7fe92930-931a-e086-4e96-a4dcb359e...@gmail.com>, Ruslan Nabioullin writes: >Hi, any ideas on what the Austron Synchronous Filter 2090A is for? I belive the idea is that if you have two Loran-C receivers tracking two different GRIs, the 2090A can blank out the strongest