Re: [time-nuts] US Army Frequency Standard
Well done Ziggy, I for one am grateful for your efforts, I commented previously on the high standard of construction but I couldn't believe that the angles of the screw slots at the corners of your schematic are identical to those in the lid of my TS65! grin John H. On 26 Jan 2012, at 03:14, Ziggy wrote: I know it's generally bad form to reply to my own post, but if you downloaded the manual already, you may want to do it again. I found a copy of the complete schematic and updated the manual, inserting the schematic where it should be. Ziggy --- On Jan 25, 2012, at 9:48 PM, Ziggy wrote: Well, it's still probably better than nothing, even with the missing bits. It's kind of an interesting little box and the lack of a completely unencumbered version of this manual really annoyed me. So I've posted a complete PDF version on my website for those interested. It's a little hefty at 18M. The link is: http://www.pumpkinbrook.com/files/TS65-FMQ1_Manual.pdf Ziggy On Jan 24, 2012, at 7:09 PM, J. Forster wrote: Ah, thanks. I have complained to Google about that scanning issue. IMO, it's a real problem. In a few years, Google may have the only extant copy of some doc. And it will be near useless w/o the fully scanned pages. This is the third time this has come up in the last few months. Either they should do it correctly, or not at all. YMMV, -John = On 01/24/2012 11:59 PM, J. Forster wrote: Google: FMQ-1 Test Set The -24P Parts Manual w/ exploded parts ID is in many places and has a drawing of the front panel. It has no schematics. The full manual will be -15 to -45 Depot Maintenance Manual, per standard Army nomenclature. The last digit will be 5, without a following P. Google has TM 11-6625-407-14 scanned. The fold-out schematic pages isn't folded out... but you get a pretty good idea how it works from the rest of the text. The schematics is there fractioned over the pages explaining it. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Things to look for when buying a few FE-5680A's?
Hi If you *need* to lock one of the new FE-5680's 10 or 20 Hz high, you probably can adjust the cap on the VCXO center it's range up there. I doubt it will reliably adjust out to 300 Hz though. For that parts changes or board surgery probably are required. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of John Beale Sent: Thursday, January 26, 2012 1:29 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Things to look for when buying a few FE-5680A's? On 1/22/2012 12:49 PM, Chris Albertson wrote: The current batch of (about) $40 units are different from what was available a year ago. These new ones require 5V DC input in addition to 15V and can only be programmed via RS232 a few Hz away from 10MHz. So they are only good for use as a 10MHz reference Option 2 in the book refers to a different type FE5380 that can be programed over a very wide range of several MHz. I think these are still being sold on eBay but not for $40. They seem to be over $100. In the manual I have (see below) Option 2 is in fact what I got for about $40. This is RS-232 control with very fine resolution, but limited range (10 MHz with a span of +/- 383 Hz according to the manual, although one I tested won't actually stay locked much above 1% of that span). The very wide range version is a different option, perhaps Option 08 (Customer specified frequency, 1 Hz - 20 MHz). --- RUBIDIUM FREQUENCY STANDARD MODEL FE-5680A SERIES OPTION 2 http://www.wa6vhs.com/Test%20equipment/FREQUENCY%20STANDARDS/FE-5680A/5680%2 0TECH%20MANUAL.pdf Table 1: Option Summary [...] Option 02 Remote Digital Control - RS-232; Resolution: 1.8 x 10-7Hz Frequency Adjustment Section 2-3 The FE-5680A output frequency can be adjusted digitally over the RS-232 interface (pins 8 and 9). This feature is available as option 2, and is not available on units purchased without this option. The frequency can be adjusted with a resolution of 1.7854E-7 Hz. For an FE-5680A device with an output frequency of 10 MHz, this corresponds to a relative frequency setting resolution of 1.7854E-14. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Things to look for when buying a few FE-5680A's?
At 01:21 AM 1/26/2012, Rex wrote: physical differences (like an sma output). Also, FEI has not been responsive, to my knowledge, to any questions from us surplus consumers/hackers. I wonder if they'd be responsive to a 'group-buy' of documentation or answers? Maybe it comes down to whether it's a hassle to spend time dealing with us, or if releasing info would break agreements with their customers. -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Things to look for when buying a few FE-5680A's?
On Thu, Jan 26, 2012 at 9:13 AM, Bob Camp li...@rtty.us wrote: Hi If you *need* to lock one of the new FE-5680's 10 or 20 Hz high, you probably can adjust the cap on the VCXO center it's range up there. The frequency division is done by digital logic inside a CPLD and you'd need to re-program the firmware. I think people have found that these new FE5680s don't lock if you move far from 10MHz and you can't get more than a few hundred Hz from 10Mhz by analog adjustment. The option 2 that is in the book is different from the fine scale adjustment the current $40 can do. the true option two units can be programmed over a range of many MHz by sending RS232 commands but the current units can only by programmed over rs232 withina very narrow range about like you'd find on a typical OCXO. I think if you want a wide range oscillator you are best using a DDS chip whos clock is locked to the FE5680 or a Thunderbolt. The FE5680's advantage over a t-bolt is portability. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Things to look for when buying a few FE-5680A's?
Hi The PPS would indeed be off if you move the 10 MHz (no matter how you do it). The range of the output relative to the 380 Hz digital tune range is restricted by the pull range of the VCXO. There have been plots posted showing the pull range, and it's (lack of) centering. No need to re-shoot any firmware. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Albertson Sent: Thursday, January 26, 2012 12:36 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Things to look for when buying a few FE-5680A's? On Thu, Jan 26, 2012 at 9:13 AM, Bob Camp li...@rtty.us wrote: Hi If you *need* to lock one of the new FE-5680's 10 or 20 Hz high, you probably can adjust the cap on the VCXO center it's range up there. The frequency division is done by digital logic inside a CPLD and you'd need to re-program the firmware. I think people have found that these new FE5680s don't lock if you move far from 10MHz and you can't get more than a few hundred Hz from 10Mhz by analog adjustment. The option 2 that is in the book is different from the fine scale adjustment the current $40 can do. the true option two units can be programmed over a range of many MHz by sending RS232 commands but the current units can only by programmed over rs232 withina very narrow range about like you'd find on a typical OCXO. I think if you want a wide range oscillator you are best using a DDS chip whos clock is locked to the FE5680 or a Thunderbolt. The FE5680's advantage over a t-bolt is portability. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Things to look for when buying a few FE-5680A's?
At 11:36 AM 1/26/2012, Chris Albertson wrote: The option 2 that is in the book is different from the fine scale adjustment the current $40 can do. the true option two units can be programmed over a range of many MHz by sending RS232 commands but the current units can only by programmed over rs232 withina very narrow range about like you'd find on a typical OCXO. I don't think this is accurate--the FEI tech manual for option 2 claims tuning resolution of 1.8e-7 Hz, so 32 bits of that is about 770 Hz of tuning range. *Maybe* option 8 (customer specified frequency 1 Hz to 20 MHz) is the wide range RS-232 tuned variant? -- newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
On Wed, Jan 25, 2012 at 8:38 PM, Jim Lux jim...@earthlink.net wrote: OK.. without getting into celestial navigation, the whole thing of telling time with the moon is intriguing. And with some forethought and data available today, we could fairly easily do what folks back in the 18th century could not. Let's say you run a suitable celestial model and identify all the reasonably bright and identifiable star that the moon occults in a given day. The moon moves about 1/2-1 degree per hour against the star field, so the question is, could you find, say, a star every couple hours. If you have a telescope and you can measure where it is pointing relative to the local meridian, then you don't need the moon. You can use a fine wre in the optical path an watch for when a star crosses the wire. The advantage of this is the telescope does not need a tracking motorized mount. It can be fixed to a concrete pier.Even a modest scope in the city can see hundreds of stars per hour. Using the Moon is only useful if you can't measure where the scope is pointed. The Moon provides a good, well known reference. So for a portable setup it could work best but there is a built-in problem with the Moon, you may not have good data on the shape of the limb. Mountain ranges and valleys between peaks are different depending on your location on Earth. If you move even a mile your star might hit a different place.In fact people have used Lunar occulations to map the height of lunar mountains.Another effect is diffraction. The stars don't just wink out because they do have a finite diameter People have actually used the moon to measure the diameter of stars by accuratly measuring the defraction effects. But the project had problem because of large boulders and mountains on the moon made it hard to know the orientation of the knife edge and worse, this would chane if you move just a few feet, some different boulder might be there. You should be able to get very good accuracy if you have a stable local oscillator and make many observations Another idea that maybe is even better is to use radio observations with two antenna that have a very long east/west baseline. You watch the difference in phase to a distant radio source. As the phase different passes zero you know it just went overhead and then the time would have to equal the R.A. of the radio source. Problem is the physical length of the cables you'd need to lay out and the lack of really bright radio sources. In theory one could get arbitrary time accuracy this way.A few radio source are easy to detect with affordable surplus/ebay equipment. Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
On 1/26/12 10:14 AM, Chris Albertson wrote: On Wed, Jan 25, 2012 at 8:38 PM, Jim Luxjim...@earthlink.net wrote: OK.. without getting into celestial navigation, the whole thing of telling time with the moon is intriguing. And with some forethought and data available today, we could fairly easily do what folks back in the 18th century could not. Let's say you run a suitable celestial model and identify all the reasonably bright and identifiable star that the moon occults in a given day. The moon moves about 1/2-1 degree per hour against the star field, so the question is, could you find, say, a star every couple hours. If you have a telescope and you can measure where it is pointing relative to the local meridian, then you don't need the moon. You can use a fine wre in the optical path an watch for when a star crosses the wire. The advantage of this is the telescope does not need a tracking motorized mount. It can be fixed to a concrete pier.Even a modest scope in the city can see hundreds of stars per hour. I was thinking of something that works anywhere in the world (pretty much) with things that you can hold in your hand (the table and your low power scope/binoculars). In theory, if you knew approximate time (say to a minute or so), then you wouldn't even need to find the star.. Look for the moon, the star will be right next to the limb, and wait til occultation occurs. Using the Moon is only useful if you can't measure where the scope is pointed. The Moon provides a good, well known reference. And easy to find in the field. So for a portable setup it could work best but there is a built-in problem with the Moon, you may not have good data on the shape of the limb. Mountain ranges and valleys between peaks are different depending on your location on Earth. If you move even a mile your star might hit a different place.In fact people have used Lunar occulations to map the height of lunar mountains.Another effect is diffraction. The stars don't just wink out because they do have a finite diameter People have actually used the moon to measure the diameter of stars by accuratly measuring the defraction effects. But the project had problem because of large boulders and mountains on the moon made it hard to know the orientation of the knife edge and worse, this would chane if you move just a few feet, some different boulder might be there. This is a very good point.. what sort of effect are we talking about. The moon subtends roughly 1/2 degree, 30 min of arc. What fraction of the lunar diameter are these mountains? Say, 10km high out of 3400 km diameter, so one part in 340, or roughly 1/10th minute of arc 1 degree = 4 minutes of time, so 1 minute of arc is 4 seconds of time. Those hills and rocks are on the order of the 1 second time measurement uncertainty. Another idea that maybe is even better is to use radio observations with two antenna that have a very long east/west baseline. You watch the difference in phase to a distant radio source. As the phase different passes zero you know it just went overhead and then the time would have to equal the R.A. of the radio source. Problem is the physical length of the cables you'd need to lay out and the lack of really bright radio sources. In theory one could get arbitrary time accuracy this way.A few radio source are easy to detect with affordable surplus/ebay equipment. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] GPS tick all over the place. Suspect aurora effects
We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is actually hard to see - even if the star is very bright. When the moon is nearly full, even disappearances behind the dark limb are hard. So ideally you want bright star disappearences on a dark limb with a moon before first quarter. (Last quarter as well - but then it's a reappearance and you don't quite know where to look). This limits the number of bright stars quite drastically. And then you have clouds... Jim On 27 January 2012 07:11, Jim Lux jim...@earthlink.net wrote: On 1/26/12 10:14 AM, Chris Albertson wrote: On Wed, Jan 25, 2012 at 8:38 PM, Jim Luxjim...@earthlink.net wrote: OK.. without getting into celestial navigation, the whole thing of telling time with the moon is intriguing. And with some forethought and data available today, we could fairly easily do what folks back in the 18th century could not. Let's say you run a suitable celestial model and identify all the reasonably bright and identifiable star that the moon occults in a given day. The moon moves about 1/2-1 degree per hour against the star field, so the question is, could you find, say, a star every couple hours. If you have a telescope and you can measure where it is pointing relative to the local meridian, then you don't need the moon. You can use a fine wre in the optical path an watch for when a star crosses the wire. The advantage of this is the telescope does not need a tracking motorized mount. It can be fixed to a concrete pier.Even a modest scope in the city can see hundreds of stars per hour. I was thinking of something that works anywhere in the world (pretty much) with things that you can hold in your hand (the table and your low power scope/binoculars). In theory, if you knew approximate time (say to a minute or so), then you wouldn't even need to find the star.. Look for the moon, the star will be right next to the limb, and wait til occultation occurs. Using the Moon is only useful if you can't measure where the scope is pointed. The Moon provides a good, well known reference. And easy to find in the field. So for a portable setup it could work best but there is a built-in problem with the Moon, you may not have good data on the shape of the limb. Mountain ranges and valleys between peaks are different depending on your location on Earth. If you move even a mile your star might hit a different place.In fact people have used Lunar occulations to map the height of lunar mountains.Another effect is diffraction. The stars don't just wink out because they do have a finite diameter People have actually used the moon to measure the diameter of stars by accuratly measuring the defraction effects. But the project had problem because of large boulders and mountains on the moon made it hard to know the orientation of the knife edge and worse, this would chane if you move just a few feet, some different boulder might be there. This is a very good point.. what sort of effect are we talking about. The moon subtends roughly 1/2 degree, 30 min of arc. What fraction of the lunar diameter are these mountains? Say, 10km high out of 3400 km diameter, so one part in 340, or roughly 1/10th minute of arc 1 degree = 4 minutes of time, so 1 minute of arc is 4 seconds of time. Those hills and rocks are on the order of the 1 second time measurement uncertainty. Another idea that maybe is even better is to use radio observations with two antenna that have a very long east/west baseline. You watch the difference in phase to a distant radio source. As the phase different passes zero you know it just went overhead and then the time would have to equal the R.A. of the radio source. Problem is the physical length of the cables you'd need to lay out and the lack of really bright radio sources. In theory one could get arbitrary time accuracy this way.A few radio source are easy to detect with affordable surplus/ebay equipment. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
On 1/26/12 2:08 PM, paul swed wrote: We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul _ google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Windows app for FE5680 info dump
Newell Your program worked just fine. Here is my units info Markings FE5680a 66576 is the model and SN is 0337-65040 Captured the system cold at turn on and then warm and locked All in the txt doc Regards Paul WB8TSL On Wed, Jan 25, 2012 at 2:37 PM, Chuck Forsberg WA7KGX N2469R c...@omen.comwrote: Here is the output from my 2nd 5680a Running Win 7 64 bit COM8 via two headed USB to RS232 cable from Frys On 01/24/2012 08:08 PM, paul swed wrote: Newell that explains that. Let me try tomorrow at the command line level. Thanks On Tue, Jan 24, 2012 at 9:37 PM, Scott Newellnewell+timenuts@n5tnl.**comnewell%2btimen...@n5tnl.com wrote: I've been asked for a windows version of the FE5680 info dump app, so here it is: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exehttp://n5tnl.com/time/fe-**5680a/control/fe5680_info_**win32.exe http://n5tnl.com/**time/fe-5680a/control/fe5680_**info_win32.exehttp://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Please let me know if you have any trouble. It's a command line program that's expecting a com port number as the only parameter (fe5680_info_win32.exe 1 for com 1). It'll dump the replies to all the commands we know of in both hex and ascii. If you try it out, please send me a copy of your results. thanks! newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshtt**ps://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. On cold start Cmd 0x22 (resetting serial port) 0x00 byte reply: Cmd 0x29 0x09 byte reply: [29] [09] [00] [20] [FF] [00] [00] [00] [FF] Cmd 0x29 ASCII (.): Cmd 0x29 ASCII ( ): Cmd 0x2B 0x0E byte reply: [2B] [0E] [00] [25] [32] [30] [30] [30] [30] [30] [30] [30] [00] [02] Cmd 0x2B ASCII (.): 2000. Cmd 0x2B ASCII ( ): 2000 Cmd 0x2D 0x09 byte reply: [2D] [09] [00] [24] [00] [00] [00] [00] [00] Cmd 0x2D ASCII (.): Cmd 0x2D ASCII ( ): Cmd 0x47 0x08 byte reply: [47] [08] [00] [4F] [23] [20] [00] [03] Cmd 0x47 ASCII (.): # . Cmd 0x47 ASCII ( ): # Cmd 0x53 0x07 byte reply: [53] [07] [00] [54] [00] [00] [00] Cmd 0x53 ASCII (.): .. Cmd 0x53 ASCII ( ): Cmd 0x57 0x56 byte reply: [57] [56] [00] [01] [9B] [4B] [00] [55] [00] [5F] [00] [6A] [00] [74] [00] [7F] [00] [8A] [00] [94] [00] [ 9A] [00] [A0] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00 ] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [9F] Cmd 0x57 ASCII (.): .K.U._.j.t... Cmd 0x57 ASCII ( ): K U _ j t Cmd 0x59 0x56 byte reply: [59] [56] [00] [0F] [9B] [B7] [00] [74] [00] [33] [00] [14] [00] [00] [00] [00] [00] [C5] [FF] [B0] [FF] [ 97] [FF] [88] [FF] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00 ] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [15] Cmd 0x59 ASCII (.): ...t.3... Cmd 0x59 ASCII ( ):t 3 Cmd 0x5A 0x0D byte reply: [5A] [0D] [00] [57] [01] [00] [BB] [07] [02] [00] [A5] [03] [19] Cmd 0x5A ASCII (.): Cmd 0x5A ASCII ( ): Cmd 0x61 0x0B byte reply: [61] [0B] [00] [6A] [36] [36] [35] [37] [36] [00] [34] Cmd 0x61 ASCII (.): 66576. Cmd 0x61 ASCII ( ): 66576 Cmd 0x65 (CS bad!) 0x07 byte reply: [65] [07] [00] [62] [9B] [0A] [0A] Cmd 0x65 ASCII (.): .. Cmd 0x65 ASCII ( ): Cmd 0x67 0x08 byte reply: [67] [08] [00] [6F] [01] [F7] [F6] [00] Cmd 0x67 ASCII (.): ... Cmd 0x67 ASCII ( ): Cmd 0xF0 0x0E byte reply: [F0] [0E] [00] [FE] [33] [2E] [34] [00] [00] [00] [00] [00] [00] [29] Cmd 0xF0 ASCII (.): 3.4.. Cmd 0xF0 ASCII ( ): 3.4
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
Yup just the first time I have seen the pps this crazy But as we speak its settling down. So it was an effect for about an hour. Regards Paul. On Thu, Jan 26, 2012 at 5:59 PM, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:08 PM, paul swed wrote: We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul _ google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
Is there something you could record to document this? Odd SNR on a bird? -Original Message- From: paul swed paulsw...@gmail.com Sender: time-nuts-boun...@febo.com Date: Thu, 26 Jan 2012 18:15:27 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] GPS tick all over the place. Suspect aurora effects Yup just the first time I have seen the pps this crazy But as we speak its settling down. So it was an effect for about an hour. Regards Paul. On Thu, Jan 26, 2012 at 5:59 PM, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:08 PM, paul swed wrote: We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul _ google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
I can look but I don't think this program will do anything like that. On Thu, Jan 26, 2012 at 6:25 PM, li...@lazygranch.com wrote: Is there something you could record to document this? Odd SNR on a bird? -Original Message- From: paul swed paulsw...@gmail.com Sender: time-nuts-boun...@febo.com Date: Thu, 26 Jan 2012 18:15:27 To: Discussion of precise time and frequency measurement time-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] GPS tick all over the place. Suspect aurora effects Yup just the first time I have seen the pps this crazy But as we speak its settling down. So it was an effect for about an hour. Regards Paul. On Thu, Jan 26, 2012 at 5:59 PM, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:08 PM, paul swed wrote: We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul _ google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. __**_ time-nuts mailing list -- time-nuts@febo.com 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
Sent u the file directly timenuts says to big a file and fair enough On Thu, Jan 26, 2012 at 6:40 PM, paul swed paulsw...@gmail.com wrote: Sun of a gun I could save it as a bitmap Here you go Regards Paul. On Thu, Jan 26, 2012 at 6:34 PM, paul swed paulsw...@gmail.com wrote: I can look but I don't think this program will do anything like that. On Thu, Jan 26, 2012 at 6:25 PM, li...@lazygranch.com wrote: Is there something you could record to document this? Odd SNR on a bird? -Original Message- From: paul swed paulsw...@gmail.com Sender: time-nuts-boun...@febo.com Date: Thu, 26 Jan 2012 18:15:27 To: Discussion of precise time and frequency measurement time-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] GPS tick all over the place. Suspect aurora effects Yup just the first time I have seen the pps this crazy But as we speak its settling down. So it was an effect for about an hour. Regards Paul. On Thu, Jan 26, 2012 at 5:59 PM, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:08 PM, paul swed wrote: We are talking parts in the -9th but I am using a hp3801 and the general software that lets you see the 1 sec variation. I had never seen this behavior before and thought the oscillator must be in trouble. Measured it against a local RB and it was stable. Then it hit me, could this actually be the effects of the aurora? I am thinking it just might be. Regards Paul _ google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. __**_ time-nuts mailing list -- time-nuts@febo.com 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
You might try compressing the file with something like 7z, or zip. That should reduce it about 10x in size. -Chuck Harris paul swed wrote: Sent u the file directly timenuts says to big a file and fair enough On Thu, Jan 26, 2012 at 6:40 PM, paul swedpaulsw...@gmail.com wrote: Sun of a gun I could save it as a bitmap Here you go Regards Paul. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
On 1/26/12 2:55 PM, Jim Palfreyman wrote: As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is actually hard to see - even if the star is very bright. When the moon is nearly full, even disappearances behind the dark limb are hard. Yes, that's what I observed when I was trying it a while ago.. So ideally you want bright star disappearences on a dark limb with a moon before first quarter. (Last quarter as well - but then it's a reappearance and you don't quite know where to look). that would sort of limit you to 1 week out of 4. But better than nothing, for a technique that requires no outside assistance. This limits the number of bright stars quite drastically. And then you have clouds... Yeah, that is something I don't have a feel for.. How many stars are candidates? I assume you could get a moon RA/declination list, and then run that against the star list. This is one of those things that I was hoping there's probably someone who has a program that can do the search trivially. I have a moon ephemeris, but I haven't found a convenient star catalog (something in ASCII that has ID, RA, Dec, Mag would be nice) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
Download Occult4 by Dave Herald. You can list off all Lunar Occultations for your location and choose a minimum magnitude to show. Start at 3.0, but probably 2.0 or above is a binocular viewing - depending on your skies. Note that Occult4 is an extensive piece of astronomical software for the experienced amateur. It can do a *lot*. So be prepared to be patient with it - however once mastered it is very very useful for accurate timing of astronomical events. The hardest and yet most satisfying for astronomical time nuts are asteroidal occultations. This is where a faint asteroid passes in front of a star and blocks it out for a few seconds. Hard to accurately predict and hard to observe. It took me 40 attempts over 30 years to see my first. But when a bunch of amateur astronomers observe and accurately time the same event you can build up a profile of the shape of the asteroid. It is a fun but dark path to go down... Jim On 27 January 2012 11:35, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:55 PM, Jim Palfreyman wrote: As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is actually hard to see - even if the star is very bright. When the moon is nearly full, even disappearances behind the dark limb are hard. Yes, that's what I observed when I was trying it a while ago.. So ideally you want bright star disappearences on a dark limb with a moon before first quarter. (Last quarter as well - but then it's a reappearance and you don't quite know where to look). that would sort of limit you to 1 week out of 4. But better than nothing, for a technique that requires no outside assistance. This limits the number of bright stars quite drastically. And then you have clouds... Yeah, that is something I don't have a feel for.. How many stars are candidates? I assume you could get a moon RA/declination list, and then run that against the star list. This is one of those things that I was hoping there's probably someone who has a program that can do the search trivially. I have a moon ephemeris, but I haven't found a convenient star catalog (something in ASCII that has ID, RA, Dec, Mag would be nice) __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
On 1/26/12 4:35 PM, Jim Lux wrote: Yeah, that is something I don't have a feel for.. How many stars are candidates? I assume you could get a moon RA/declination list, and then run that against the star list. This is one of those things that I was hoping there's probably someone who has a program that can do the search trivially. I have a moon ephemeris, but I haven't found a convenient star catalog (something in ASCII that has ID, RA, Dec, Mag would be nice) OK.. I found something.. A list of the 301 brightest stars (down to about 3.55 mag).. Bummer.. only about 5 or 6 of them are anywhere near where the moon goes in 2012. (as in within a few degrees in declination) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Windows app for FE5680 info dump
I'd like to try this program, but my browser simply times out at the URL supplied below. Is it right at: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe ??? thanks Don paul swed Newell Your program worked just fine. Here is my units info Markings FE5680a 66576 is the model and SN is 0337-65040 Captured the system cold at turn on and then warm and locked All in the txt doc Regards Paul WB8TSL On Wed, Jan 25, 2012 at 2:37 PM, Chuck Forsberg WA7KGX N2469R c...@omen.comwrote: Here is the output from my 2nd 5680a Running Win 7 64 bit COM8 via two headed USB to RS232 cable from Frys On 01/24/2012 08:08 PM, paul swed wrote: Newell that explains that. Let me try tomorrow at the command line level. Thanks On Tue, Jan 24, 2012 at 9:37 PM, Scott Newellnewell+timenuts@n5tnl.**comnewell%2btimen...@n5tnl.com wrote: I've been asked for a windows version of the FE5680 info dump app, so here it is: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exehttp://n5tnl.com/time/fe-**5680a/control/fe5680_info_**win32.exe http://n5tnl.com/**time/fe-5680a/control/fe5680_**info_win32.exehttp://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Please let me know if you have any trouble. It's a command line program that's expecting a com port number as the only parameter (fe5680_info_win32.exe 1 for com 1). It'll dump the replies to all the commands we know of in both hex and ascii. If you try it out, please send me a copy of your results. thanks! newell N5TNL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshtt**ps://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. R. Bacon If you don't know what it is, don't poke it. Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Windows app for FE5680 info dump
At 07:08 PM 1/26/2012, Don Latham wrote: I'd like to try this program, but my browser simply times out at the URL supplied below. Is it right at: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Try again, please. (I had a firewall rule that kept getting triggered by a bad link from some of the messages in the thread.) thanks, newell ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. There's a wonderful example of GPS timing and space weather in a paper by fellow time-nuts Rick Hambly and Tom Clark. Rick was calibrating a set of Motorola Oncore receivers at USNO and happened to capture the massively disrupting effect of a rare Aurora on September 7, 2002. There's a mention of this in his paper: http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed.pdf But the best part are the sky photos and plots on page 17 and 18 here: http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed_VG.ppt /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] GPS tick all over the place. Suspect aurora effects
Tom Van Baak said the following on 01/26/2012 08:24 PM: google for Space Weather Effects on GPS there's a presentaton by Thomas Bogdan at the Space Weather Prediction Center that gives you some numbers to work with. 10s of meters effects aren't unusual. There's a wonderful example of GPS timing and space weather in a paper by fellow time-nuts Rick Hambly and Tom Clark. Rick was calibrating a set of Motorola Oncore receivers at USNO and happened to capture the massively disrupting effect of a rare Aurora on September 7, 2002. There's a mention of this in his paper: http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed.pdf But the best part are the sky photos and plots on page 17 and 18 here: http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed_VG.ppt Not nearly as pretty, but I caught a major flare in 2006 in some GPS signal strength data that I was recording at the time: http://febo.com/pages/gps_solar_flare/index.html John ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
It's old, but how about the SAO Atlas catalog. It goes to something like 7th Mag, so there are lots to pick from. -John == On 1/26/12 2:55 PM, Jim Palfreyman wrote: As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is actually hard to see - even if the star is very bright. When the moon is nearly full, even disappearances behind the dark limb are hard. Yes, that's what I observed when I was trying it a while ago.. So ideally you want bright star disappearences on a dark limb with a moon before first quarter. (Last quarter as well - but then it's a reappearance and you don't quite know where to look). that would sort of limit you to 1 week out of 4. But better than nothing, for a technique that requires no outside assistance. This limits the number of bright stars quite drastically. And then you have clouds... Yeah, that is something I don't have a feel for.. How many stars are candidates? I assume you could get a moon RA/declination list, and then run that against the star list. This is one of those things that I was hoping there's probably someone who has a program that can do the search trivially. I have a moon ephemeris, but I haven't found a convenient star catalog (something in ASCII that has ID, RA, Dec, Mag would be nice) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] telling time without a clock
simbad is a catalog of catalogs with a built in web based search engine. It is pretty much what everyone uses to search. You can define a shape and ask for all objects that meet some criteria that are within that shape. Other software can plot the result for you as a chart If it is not in Simbad you have likely discovered something new. http://simbad.u-strasbg.fr/simbad/ On Thu, Jan 26, 2012 at 7:09 PM, J. Forster j...@quikus.com wrote: It's old, but how about the SAO Atlas catalog. It goes to something like 7th Mag, so there are lots to pick from. -John == On 1/26/12 2:55 PM, Jim Palfreyman wrote: As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is actually hard to see - even if the star is very bright. When the moon is nearly full, even disappearances behind the dark limb are hard. Yes, that's what I observed when I was trying it a while ago.. So ideally you want bright star disappearences on a dark limb with a moon before first quarter. (Last quarter as well - but then it's a reappearance and you don't quite know where to look). that would sort of limit you to 1 week out of 4. But better than nothing, for a technique that requires no outside assistance. This limits the number of bright stars quite drastically. And then you have clouds... Yeah, that is something I don't have a feel for.. How many stars are candidates? I assume you could get a moon RA/declination list, and then run that against the star list. This is one of those things that I was hoping there's probably someone who has a program that can do the search trivially. I have a moon ephemeris, but I haven't found a convenient star catalog (something in ASCII that has ID, RA, Dec, Mag would be nice) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Windows app for FE5680 info dump
Got it, Scott thanks. I'm packaging a 5680 now and should be able to try it Real Soon Now. Don Scott Newell At 07:08 PM 1/26/2012, Don Latham wrote: I'd like to try this program, but my browser simply times out at the URL supplied below. Is it right at: http://n5tnl.com/time/fe-5680a/control/fe5680_info_win32.exe Try again, please. (I had a firewall rule that kept getting triggered by a bad link from some of the messages in the thread.) thanks, newell ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. R. Bacon If you don't know what it is, don't poke it. Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
