Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

2017-08-01 Thread Leigh L. Klotz, Jr WA5ZNU
became aware of this issue. Could you check the source tarball? I just downloaded it and it appears to be the unmodified version of my code from 2010. Ralph AB4RS Sent from my iPhone On Aug 1, 2017, at 2:42 AM, Leigh L. Klotz, Jr WA5ZNU wrote: Based on Mark Sims updates to Heather v5.0 I'

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

2017-07-31 Thread Leigh L. Klotz, Jr WA5ZNU
Based on Mark Sims updates to Heather v5.0 I've updated Ralph Smith's NTP daemon to handle the rollover. I haven't updated the gpsd. https://wa5znu.org/2011/08/tbolt/ It's not as ambitious as Mark's update; this one doesn't read system time so it will have to be recompiled again in about 20 y

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-03-16 Thread Leigh L. Klotz, Jr WA5ZNU
I use this on Linux: cd ~klotz/.wine/drive_c/"Program Files"/Heather wine heather.exe /IP=localhost:45000 /TW=250 I use Ralph Smith's tboltd so heather connects to a TCP port, but you can also just give a COM port to connect on the line above. The /TW=250 gives reasonable performance without

Re: [time-nuts] Lady Heather for a noob

2012-01-13 Thread Leigh L. Klotz, Jr WA5ZNU
On 01/13/2012 01:22 AM, Javier Herrero wrote: For providing ntp, probably the best way is to use ntp :) Ralph Smith did a good integration for BSD NTP. I patched it and wrote some startup and monitoring scripts for it for Ubuntu. See http://wa5znu.org/2011/08/tbolt/ I run Heather under W

Re: [time-nuts] US New Year countdown - accurate?

2012-01-07 Thread Leigh L. Klotz, Jr WA5ZNU
I got a demo of a national network quality (and price) digital TV encoder from a ham friend in the industry. It took about 6 seconds delay itself to encode images. The compression has a lot of state and multiple heuristic systems as well (face trackers, for example). Leigh/WA5ZNU On 01/01/20

[time-nuts] WeirdStuff tbolt $75

2010-09-02 Thread Leigh L. Klotz, Jr WA5ZNU
WeirdStuff has tbolts, no case, no info about firmware version, for $75. They were $495 but I sent them a note saying it wasn't a competitive price and they lowered it and they appear to be selling out quickly. http://www.weirdstuff.com/cgi-bin/category.cgi?item=29654 Also on their weirdstuf

Re: [time-nuts] Bulletin Board / Forum

2010-08-26 Thread Leigh L. Klotz, Jr. WA5ZNU
without regard to setting up the bboard or not, I'd recommend creating an archive of time-nuts at Nabble. Nabble is more easily searchable than the standard mailman type archives, and it has a bboard format, and people can use accounts there and post back to the list. It's all transparent to the

[time-nuts] PICTIC II and DG535

2010-08-18 Thread Leigh L. Klotz, Jr WA5ZNU
I've recently acquired an SRS DG535 and am looking for anyone else who has used one to calibrate or characterize the PICTIC II to compare procedures. Leigh/WA5ZNU ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.fe

[time-nuts] Need PICTIC II PIC

2010-08-18 Thread Leigh L. Klotz, Jr. WA5ZNU
Now that Dan Schultz has kindly provided me with the elusive 74AC175PC, I still need a programmed PIC for the PICTIC II. Is there are thread where we're gathering together for another kind soul to distribute them? Leigh. ___ time-nuts mailing list --

Re: [time-nuts] Remove Pictic boards from envelopes

2010-08-09 Thread Leigh L. Klotz, Jr WA5ZNU
I tried water, then isopropyl, but what worked was a quick cleaning with a white eraser. Leigh/WA5ZNU On 08/06/2010 08:15 AM, Ed Palmer wrote: You mean they are tinned? I received my two boards a couple of days ago. I thought that they missed the tinning solution. There's just an occasion

Re: [time-nuts] What's the latest correct PICTIC II Mouser project?

2010-08-04 Thread Leigh L. Klotz, Jr WA5ZNU
ered parts) and highest quality parts? Please send a link. Thank you in advance. Has anyone started updating the project to include substitutes? 73 Brice KA8MAV - Original Message ----- From: "Leigh L. Klotz, Jr. WA5ZNU" To: "Discussion of precise time and frequency m

Re: [time-nuts] What's the latest correct PICTIC II Mouser project?

2010-08-04 Thread Leigh L. Klotz, Jr. WA5ZNU
I've ordered the mouser project and skipped the parts that won't ship until 2011. So we're in the same boat. Leigh/Wa5ZNU > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] 74AC175PC

2010-08-03 Thread Leigh L. Klotz, Jr. WA5ZNU
> I would do the same .. > > -pete Please count me in for $10 plus shipping for qty 2, if anybody's counting. Leigh/WA5ZNU > > On Sun, Aug 1, 2010 at 11:03 PM, Heathkid wrote: >> Stanley, >> >> Would you be willing to do another "group buy"?  I'll send you enough $ >> for >> 10 of them via PayP

Re: [time-nuts] Can Lady Heather Keep Computer Clock On Time?

2010-07-31 Thread Leigh L. Klotz, Jr WA5ZNU
On 07/29/2010 03:57 PM, Mark Sims wrote: Yes, there is a time sync command that causes the program to set the system clock at periodic intervals or whenever it differs from GPS by a given amount. I'm still out on the "Project From Hell Mark II" and I don't remember all the gory details... I

Re: [time-nuts] Basic question regarding comparing two frequencies

2010-07-26 Thread Leigh L. Klotz, Jr. WA5ZNU
>... > I use Peter G3PLX's SBSpectrum as the analyser, where you can trim the > sample rate in tiny steps. It also has a frequency resolution of 25mHz, > which is more than adequate for HF. My combination has won FMCs, but I > still can't resolve 0.01Hz off-air. >... > > 73, > Murray ZL1BPU > You

Re: [time-nuts] Basic question regarding comparing two frequencies

2010-07-25 Thread Leigh L. Klotz, Jr WA5ZNU
This is close to the project I showed at the SF Bay Area Maker Faire in May. I showed fractional ppb difference measurements using a $25 flea market scope. The photo below is by a former NIST Cs fountain researcher who stopped by: http://www.flickr.com/photos/oskay/4640673869/in/set-7215762398

Re: [time-nuts] FRS-C TTL / sine outboard filter question

2010-06-23 Thread Leigh L. Klotz, Jr. WA5ZNU
Thank you, Didier. That pretty much sums it up. I was aware of the signal level issue but didn't consider that passband ripple would be temperature sensitive. It's fun learning to think in the long time domain. In the meantime I've found a 10 mbit ethernet ISA card in my office and will follow R

Re: [time-nuts] FRS-C TTL / sine outboard filter question

2010-06-23 Thread Leigh L. Klotz, Jr. WA5ZNU
> ... >> [snip] > If you need a sine wave output but don't want to change anything inside, > just add a lowpass filter. > A 5th order LPF (three inductors/ 2 caps or vice versa) should give you > a clean sine wave output. > Just add a coupling cap to remove the DC component. > > Adrian > > _ Thank

Re: [time-nuts] FRS-C TTL / sine outboard filter question

2010-06-23 Thread Leigh L. Klotz, Jr. WA5ZNU
Mike S wrote: > It sounds like you made the changes to the A4 oscillator board, but not > the ones to the A3 power supply board (several inductors, resistors > and caps). I found that using a 1 uF for C16, instead of the > documented 0.1 uF, gives a better signal. > See the top of page A-15 in the

[time-nuts] FRS-C TTL / sine outboard filter question

2010-06-22 Thread Leigh L. Klotz, Jr WA5ZNU
At the local flea market, I picked up what appears to be an Efratom FRS-C. It is marked "TTL" internally. It has the passive connector board, but not the active board with the 15 MHz synthesizer on it. Mine is marked "TTL" internally. The service manual has a chart showing the differences b

Re: [time-nuts] Reciprocal Counters

2010-06-10 Thread Leigh L. Klotz, Jr. WA5ZNU
There will likely be one of these at the Electronics Flea Market in Cupertino, CA this Saturday. I saw it last month with a $20 price tag, but my guess is that if you can lift it it's yours. it's the one with the stack of neon blubs for each digit. (Somewhere I have one in a garage as well...) L

Re: [time-nuts] Fluke T-Bolt Monitor Dumb Question

2010-06-04 Thread Leigh L. Klotz, Jr. WA5ZNU
> Is that Daughter-Board soldered in or plugged in ? > It looks like it's plugged into the connector but I can't > get it to budge and I really don't want to apply too much > force and wind up breaking it. > > Thanks, Dick, W1KSZ > I believe it's soldered. I was able to do my mod using through-ho

Re: [time-nuts] Fluke monitor

2010-06-03 Thread Leigh L. Klotz, Jr WA5ZNU
I fixed my fluke.l monitor. This evening I got mail today from Bob Mokia: The problem is too much volts on CPU (8051F330D). Must have diodes 1n4148 etc at D1 and D2. Drop cpu volts to 3.6volts. Maximum volts from data sheet is 4.2 volts. D1, D2, and D3 are zero-ohm SMT resistors in serie

Re: [time-nuts] Thunderbolt, Rb, Scopes at SF Bay Maker Faire this weekend

2010-05-24 Thread Leigh L. Klotz, Jr. WA5ZNU
I received some messages asking how the demo went, so I'll summarize here. If you weren't originally interested in this demo or its results, you probably won't be interested in this. On Friday, we showed the following demos to 3rd to 9th graders: - paper-based oscilloscope - disk-drive voice coil

Re: [time-nuts] Good scopes under $40 was Thunderbolt, Rb,

2010-05-21 Thread Leigh L. Klotz, Jr WA5ZNU
Can you really get a useful scope for $25? What's it like? It's 30 Mhz dual-trace analog Tek scope, a bit fuzzy looking. But it gets the point across that you don't need a high-end scope to do these measurements, just basic skills and thought. Here's someone who made the hard-drive s

Re: [time-nuts] Thunderbolt, Rb,

2010-05-20 Thread Leigh L. Klotz, Jr WA5ZNU
Thanks for thinking about and commenting on my project. The goal is to show how you can use a scope in interesting ways. One of the ways is to show that you can measure fraction PPB in stable, periodic signals, and you don't need a $5000 LeCroy, just a stopwatch and a few minutes. The FE5680

[time-nuts] Thunderbolt, Rb, Scopes at SF Bay Maker Faire this weekend

2010-05-20 Thread Leigh L. Klotz, Jr. WA5ZNU
As part of the SF Bay Area Maker Faire this weekend, I'll be showing a Thunderbolt GPSDO and a FE-5680A Rubidium disciplined oscillator, both connected to a $25 flea-market oscilloscope. The demo is part of a hands-on "things to do with oscilloscopes." In this experiment, we'll have visitors use

Re: [time-nuts] Fluke monitor

2010-05-16 Thread Leigh L. Klotz, Jr WA5ZNU
You're right about the current. I just checked it with my DMM and got 45ma. My inline power meter must not be that it's not that accurate at the low end. The display works; the backlight works; the processor must be doing something since it prints a variety of messages. It's the RS232 that

Re: [time-nuts] pingout for tu00-d200 module

2010-05-16 Thread Leigh L. Klotz, Jr WA5ZNU
I had a bunch of them and gave them away. For XY resolution I couldn't get better than 100m. And since it's not a Jupiter, no 10KHz output. I went to WSW and checked one there and it was the same part I got from China. Leigh/WA5ZNU I've seen a number of references to documents claiming to hol

Re: [time-nuts] Fluke monitor

2010-05-12 Thread Leigh L. Klotz, Jr WA5ZNU
On 05/06/2010 12:29 PM, Arthur Dent wrote: "But now here is the finding. The monitor board has the 7805 SMD version and I was feeding from +12Volt and after a while the SMD voltage regulator overheated and started to drop the voltage and it was the reason to receive/display garbled msg.

Re: [time-nuts] Lady Heather Daemon for FreeBSD

2010-05-09 Thread Leigh L. Klotz, Jr WA5ZNU
On 02/02/2010 10:18 AM, Ralph Smith wrote: It should also port to Linux easily with minimal tweaking. I just don't have a Linux box available. Ralph I have tboltd running on Ubuntu 9 Linux. I have not yet tried the ntp part, but LadyHeather 3.00 Beta (running under Wine) connects. With

Re: [time-nuts] Failure Imminent for WAAS satellite...

2010-05-05 Thread Leigh L. Klotz, Jr. WA5ZNU
They spend most of the article on LEO hazards, but this is a geo-sync orbit. Leigh/WA5ZNU > At 06:32 PM 5/3/2010, Dave hartzell wrote... > And it gets even more interesting. Here's more backstory and detail... > > http://www.msnbc.msn.com/id/36919374/ns/technology_and_science-space/ > _

Re: [time-nuts] FEI FE-5680A

2010-04-01 Thread Leigh L. Klotz, Jr WA5ZNU
On 03/24/2010 03:18 PM, Magnus Danielson wrote: Fellow time-nuts, ... Second, anything I should keep in mind as I power one up? ... Cheers, Magnus There's a bit of discussion in the archives about the need for a heat sink, and also about the whether it's necessary to anneal the case in a 400

Re: [time-nuts] 60Hz mains clocking in computers

2009-12-16 Thread Leigh L. Klotz, Jr WA5ZNU
In 1984 we had a QBUS-based 68000 (dual 68K, due to the paging flaw) that ran 9-track tapes off the end and gained about a good fraction of an hour a day on its clock. We complained to the vendor and they swapped CPU boards for us. Tapes worked fine, and the clock was more accurate, but progr

Re: [time-nuts] HP 5328 PSU nightmare...

2009-09-11 Thread Leigh L. Klotz, Jr WA5ZNU
And vacuum tube equipment using indirectly-heated cathodes: http://www.cpii.com/docs/related/23/Basic%20Tube%20Design.pdf "Operating techniques that are proper for filamentary tubes are not necessarily correct for tubes with indirectly heated cathode emitters. In particular, the opera- tion of

Re: [time-nuts] HP5328A repair experience

2009-09-10 Thread Leigh L. Klotz, Jr WA5ZNU
I have an HP-5216A that I got at the local flea market. One tube is bad and one driver. I found the drivers (they're special HP chips), but now I see it has about 10mA leakage current to ground. I've removed everything on the primary side and it seems to be the transformer. There's a slight ch

Re: [time-nuts] [tapr-announce] More Thunderbolts available

2009-07-20 Thread Leigh L. Klotz, Jr. WA5ZNU
Are they now sold out? Leigh/WA5ZNU > You guys are too quick!!! > > I knew I should have taken down the 'sold out' sign BEFORE posting the > message, but I forgot and did it backwards. > > Try it again. > > On Tue, 14 Jul 2009, Sam Carson wrote: > >> john >> The web site says not available >> Sam C

Re: [time-nuts] Ideas for a long-wave receiver sought

2009-06-23 Thread Leigh L. Klotz, Jr. WA5ZNU
Are you doing DGPS? An an alterative to the roll-your-own SDR, tou can build a direct conversion small receiver or IF converter with a SA602 chip, which contains a Gilbert cell mixer and a local oscillator. Here is a board that will do most of what you want, if you're willing to live with the SA6

Re: [time-nuts] Thunderbolts, time references, NTP etc.

2009-06-15 Thread Leigh L. Klotz, Jr WA5ZNU
It's "fluke.l" not "flukel" who I've dealt with quite recently, and many other more venerable folks on this list have commented on as well. Leigh. Is this good value, and a trusted seller? I went looking for "Fluke1" as listed earlier on here for these devices (Thunderbolt GPS disciplined refer

Re: [time-nuts] FE-5680A thermal management

2009-06-14 Thread Leigh L. Klotz, Jr WA5ZNU
For reference, Ridge Equipment has a photo of one of this year's crop of FE-5680A mounted to a large aluminum plate. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330233071735 http://i43.tinypic.com/126cpcp.jpg Leigh/WA5ZNU Almost all rubidium standards DO specify the use of some form of a

Re: [time-nuts] FE-5680A heat sink

2009-06-09 Thread Leigh L. Klotz, Jr WA5ZNU
RS232 connector, and perhaps others who buy this same run of device may want to investigate that. Leigh. Bruce Griffiths wrote: Leigh L. Klotz, Jr WA5ZNU wrote: So far I've seen http://www.dd1us.de/Downloads/precise%20reference%20frequency%20rev%200_4.pdf If the case is M

Re: [time-nuts] FE-5680A heat sink

2009-06-09 Thread Leigh L. Klotz, Jr WA5ZNU
Yes, thank you to all. I'll go ahead with the heat sink on the bottom and consider a fan nearby. Leigh/WA5ZNU I think we've all learned from this. Good info about the Efratom unit, and sounds as though we should aim for around 38C with the FEI units as well. The FE-5680 looks to be easier to de

Re: [time-nuts] FE-5680A heat sink

2009-06-08 Thread Leigh L. Klotz, Jr WA5ZNU
un hot. What did the manufacturer suggest? -Chuck Harris Leigh L. Klotz, Jr WA5ZNU wrote: I've attached an SMA connector to my FE-5680A and built an external linear power supply with a TO-3 7815. I ran the device today for about half an hour, and used an infrared sensing thermometer to m

[time-nuts] FE-5680A heat sink

2009-06-07 Thread Leigh L. Klotz, Jr WA5ZNU
I've attached an SMA connector to my FE-5680A and built an external linear power supply with a TO-3 7815. I ran the device today for about half an hour, and used an infrared sensing thermometer to measure the external case temperature. It got up to 48 C externally in the physics package area.

[time-nuts] FE 5680A supply voltage

2009-05-27 Thread Leigh L. Klotz, Jr. WA5ZNU
Is anyone familiar with the hazards of an undervoltage supply on an FE 5680A? I've seen reports of users running it at a more commonly available 13.2V instead of 15V. What module might be most affected? The lamp? Thanks, Leigh. ___ time-nuts mailin