Re: [time-nuts] Antennas in apartments
On Sun, 16 Dec 2007 22:57:49 -0800, Hal Murray [EMAIL PROTECTED] wrote: Talk to your building superintendent. Offer to provide NTP service to the whole complex if he will help you setup a GPS antenna. I can see it now. Duh, how's this NTP stuff gonna help me unstop the toilet in 23? :-) What do people who want satellite TV do? Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. John -- John De Armond See my website for my current email address http://www.neon-john.com http://www.johndearmond.com -- best little blog on the net! Tellico Plains, Occupied TN If we aren't supposed to eat animals, why are they made with meat? ___ 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] Antennas in apartments
Neon John wrote: On Sun, 16 Dec 2007 22:57:49 -0800, Hal Murray [EMAIL PROTECTED] wrote: Talk to your building superintendent. Offer to provide NTP service to the whole complex if he will help you setup a GPS antenna. I can see it now. Duh, how's this NTP stuff gonna help me unstop the toilet in 23? :-) What do people who want satellite TV do? Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. I think you need to read the law a little bit more carefully! What the law says, as I read it, is that you can put up radio, TV, or satellite antennas on your own property, regardless of covenants, home owners association rules, or zoning ordinances. But, if the property isn't yours, or isn't available for your exclusive use, it is up to the owner (or controlling authority) to decide whether you may or may not. The FCC's website has a QA section where they specifically answer a question about putting up an antenna that extends beyond the apartment/townhouse deck into the air space. They say that the law only controls what is allowed within the confines of the deck, and not what is allowed in the air space beyond the deck. -Chuck ___ 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] Discussion of precise time and frequency measurement
Here's a link to the FCC Fact Sheet on Placement of Antennas: http://www.fcc.gov/mb/facts/otard.html The antenna type appears to be covered by the rule but then subsequently excluded in the question on 'fixed wireless signals'. In the past I've provided my association with a copy of the FAQ and they didn't have the technical knowledge to spot this exception and subsequently approved the antenna (after a quick pass by their lawyer). A second issue is that the FCC says that the rules does NOT apply to an antenna that extends out beyond the balcony or patio (this is usually considered to be in a common area). It sounds like they've already gone through the rule/FAQ and understand their rights... //MDYER -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ronald Held Sent: Monday, December 17, 2007 4:15 PM To: time-nuts@febo.com Subject: [time-nuts] Discussion of precise time and frequency measurement Since the moving option is out, perhaps I need to investigate whether I currently can get any inside or outside signal. Is ther3=e an inexpensive way given that I do not have any circuit assemble skills? The complex will allow dishes as long as the are completely inside the balcony(I speculate that it is at the behest of the local cable company). I do not recall seeing any dishes on building in my complex. If I can get a signal inside or outside, what then? Ronald ___ 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] Antennas in apartments
On Mon, 17 Dec 2007 13:43:41 -0500, Chuck Harris [EMAIL PROTECTED] wrote: Neon John wrote: Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. I think you need to read the law a little bit more carefully! Should have figured you'd be the one to make that kind of pedantic reply. What the law says, as I read it, is that you can put up radio, TV, or satellite antennas on your own property, regardless of covenants, home owners association rules, or zoning ordinances. But, if the property isn't yours, or isn't available for your exclusive use, it is up to the owner (or controlling authority) to decide whether you may or may not. I'm neither interested in parsing individual sentences in a regulation (I hire a lawyer to do that for me) nor debating this guy's controlling status. As a landlord, I've been told that if I want to avoid a slew of legal fees and hassles, let the tenants put up their dishes as they wish as long as the placement is reasonable. As an observer, I notice that most every apartment complex I've observed follows that same guidance. I'll rephrase. The implication for a solution to the GPS antenna problem is fairly obvious 99.999% of the time. Put the dish up, strap on a GPS receiver and see what happens. Sheesh. John -- John De Armond See my website for my current email address http://www.neon-john.com http://www.johndearmond.com -- best little blog on the net! Tellico Plains, Occupied TN I like you ... you remind me of me when I was young and stupid. ___ 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] HP5359A non-linearities
Fellow time-nuts! I have been making some measurements on the HP5359A using the DTS2070C. I am adjusting the period and measure that. Initially it is apparent that the HP5359A does not hit the mark, but it is also clear that the CAL button does indeed make a difference. It is also very interesting to notice how the jitter changes between the different position as well as the shift in period time. I also observed blind spots where step changes does not change period time. They also had a very much lower jitter, 12-14 ps compared to 45-50 ps. Should say that I haven't made the full performance check or even attempted doing any calibration. As I found the blind spot at 899,80-899,85 ns. It is just above 89 steps of 10,078125 ns we have 896,953125 ns, so it is early in the load-cycle. Some 56-57 steps of about 200. Got to investigate what happends with the DAC level and also look at the level. I have only been fooling around, but if done properly one should span the period step by step and measure the actual period and jitter. Should be interesting to see how the pattern of the analog delay reoccur on the regular 10,078125 ns interval. 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.
Re: [time-nuts] Antennas in apartments
If you have purchased, leased or rented property and there were CCR's included in the transaction and in those CCR's is buried a prohibition on outside antennas, you are out of luck. You entered into a contract and the CCR's are a part of that contract. In fact, the FCC has stated that in the case of CCR's prohibiting Ham Radio antennae, PRB-1 does NOT apply. That being said, I go for the age old approach that asking forgiveness is better than asking permission. Put up as small an antenna as you can, some are only 2-3 in diameter and tell the landlord, if he asks, the use is classified. 73, Dick, W1KSZ/7 -Original Message- From: Chuck Harris [EMAIL PROTECTED] Sent: Dec 17, 2007 11:43 AM To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] Antennas in apartments Neon John wrote: On Sun, 16 Dec 2007 22:57:49 -0800, Hal Murray [EMAIL PROTECTED] wrote: Talk to your building superintendent. Offer to provide NTP service to the whole complex if he will help you setup a GPS antenna. I can see it now. Duh, how's this NTP stuff gonna help me unstop the toilet in 23? :-) What do people who want satellite TV do? Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. I think you need to read the law a little bit more carefully! What the law says, as I read it, is that you can put up radio, TV, or satellite antennas on your own property, regardless of covenants, home owners association rules, or zoning ordinances. But, if the property isn't yours, or isn't available for your exclusive use, it is up to the owner (or controlling authority) to decide whether you may or may not. The FCC's website has a QA section where they specifically answer a question about putting up an antenna that extends beyond the apartment/townhouse deck into the air space. They say that the law only controls what is allowed within the confines of the deck, and not what is allowed in the air space beyond the deck. -Chuck ___ 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] Discussion of precise time and frequency measurement
Hi Ronald: Some people interested in the WAAS aspect of GPS have used the common Ku band satellite TV dishes as reflectors and mounted a GPS antenna at the focus (where the Ku band antenna would normally be located. The claim is that it works well even though the polarity of the reflected GPS signal is backwards. You probably can get one of these antennas and it's mount for free since there's millions of them all over the world. The neat thing is that you can have it sitting back on the balcony pointing at the clear opening (remember it's an offset feed so the dish needs to point much lower than where the dish faces.) You would only have a partial sky view but if your balcony faces any direction except North, they you should get a lock some of the time. Note there are no GPS sats within 30 degrees of the North or South pole so a GPS antenna pointed up to the North in the northern hemisphere will not see too many sats. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam Ronald Held wrote: Since the moving option is out, perhaps I need to investigate whether I currently can get any inside or outside signal. Is ther3=e an inexpensive way given that I do not have any circuit assemble skills? The complex will allow dishes as long as the are completely inside the balcony(I speculate that it is at the behest of the local cable company). I do not recall seeing any dishes on building in my complex. If I can get a signal inside or outside, what then? Ronald ___ 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] HP5359A non-linearities
In a message dated 12/17/2007 15:50:45 Pacific Standard Time, [EMAIL PROTECTED] writes: I have been making some measurements on the HP5359A using the DTS2070C. I am adjusting the period and measure that. Hi Magnus, have you, or has anyone else figured out yet how to save continuous TI data from the DTS down to a file using Visi etc? Thanks, Said **See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop000304) ___ 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] HP5359A non-linearities
In message [EMAIL PROTECTED], Magnus Danielson writes: Fellow time-nuts! I have been making some measurements on the HP5359A using the DTS2070C. I am adjusting the period and measure that. Initially it is apparent that the HP5359A does not hit the mark, The 5359A doesn't work quite the way you would expect, the trigger is just sort of a trigger for an internal trigger, from which the pulse will be delivered, very precisely (if properly calibrated). It's kind of strange, once you've read their explanation, it makes sense. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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] HP5359A non-linearities
From: [EMAIL PROTECTED] Subject: Re: [time-nuts] HP5359A non-linearities Date: Mon, 17 Dec 2007 19:22:58 EST Message-ID: [EMAIL PROTECTED] Hi Said, have you, or has anyone else figured out yet how to save continuous TI data from the DTS down to a file using Visi etc? I haven't tried that yeat on the DTS. Lack of time to fool around seriously has prohibited me so far. I think the Visi can be a bit wrong application for that. It is targeted at a different direction than you would care at. Have you looked at the programmers manual? Should be the way to go. 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.
Re: [time-nuts] HP5359A non-linearities
From: Poul-Henning Kamp [EMAIL PROTECTED] Subject: Re: [time-nuts] HP5359A non-linearities Date: Tue, 18 Dec 2007 00:28:34 + Message-ID: [EMAIL PROTECTED] In message [EMAIL PROTECTED], Magnus Danielson writes: Fellow time-nuts! I have been making some measurements on the HP5359A using the DTS2070C. I am adjusting the period and measure that. Initially it is apparent that the HP5359A does not hit the mark, The 5359A doesn't work quite the way you would expect, the trigger is just sort of a trigger for an internal trigger, from which the pulse will be delivered, very precisely (if properly calibrated). It's kind of strange, once you've read their explanation, it makes sense. I have spent my time over the operating and service manual to figure it out, so I have a fair idea of how it ticks, and when operating in the frequency/period mode it triggers itself. What I have been doing is measuring the acheived period time vs. dialed period time. The startable VCO is indeed a strange beast, but it makes kind of sense. You don't know when the trigger gets there, but once it does, you want to count some number of 129/128 * 10 ns clocks and then analogue interpolate the last fractional 129/128 * 10 ns in about 50 ps steps, or about 1/200 fraction of that. It is very similar to the startable VCO in the 5370B, but with a different ratio (257/256). You could use some other method than the startable oscillator, but all methods depend upon some means of measuing the trigger error relative some stable clock and then maintain that allignment error somehow while adding some arbitrary programable delay value to output an output event. Regardless of method, we can expect a variance of jitter and variance of step- size/non-linearity. I was kind of interested in verifying the properties before using it to test lesser counters than the DTS-2070C. ;-) Normal time-nut activity I guess. 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] Discussion of precise time and frequency measurements
I was just reminded by James Maynard that through my CDMA input to the Endrun Precis Cf unit, I should be within 10 microsecond of UTC using GPS indirectly. How much more accurate over time would the GPSDO option be for me, assuming I have a strong and steady enough signal? Ronald -- Forwarded message -- From: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Dec 17, 2007 6:50 PM Subject: time-nuts Digest, Vol 41, Issue 62 To: I was just [EMAIL PROTECTED] Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than Re: Contents of time-nuts digest... Today's Topics: 1. Re: Antennas in apartments (Neon John) 2. Re: Antennas in apartments (Chuck Harris) 3. Discussion of precise time and frequency measurement (Ronald Held) 4. Re: Discussion of precise time and frequency measurement (Michael J. Dyer) 5. Re: Antennas in apartments (Neon John) 6. HP5359A non-linearities (Magnus Danielson) 7. Re: Antennas in apartments (Richard W. Solomon) -- Message: 1 Date: Mon, 17 Dec 2007 12:25:08 -0500 From: Neon John [EMAIL PROTECTED] Subject: Re: [time-nuts] Antennas in apartments To: Discussion of precise time and frequency measurement time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=us-ascii On Sun, 16 Dec 2007 22:57:49 -0800, Hal Murray [EMAIL PROTECTED] wrote: Talk to your building superintendent. Offer to provide NTP service to the whole complex if he will help you setup a GPS antenna. I can see it now. Duh, how's this NTP stuff gonna help me unstop the toilet in 23? :-) What do people who want satellite TV do? Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. John -- John De Armond See my website for my current email address http://www.neon-john.com http://www.johndearmond.com -- best little blog on the net! Tellico Plains, Occupied TN If we aren't supposed to eat animals, why are they made with meat? -- Message: 2 Date: Mon, 17 Dec 2007 13:43:41 -0500 From: Chuck Harris [EMAIL PROTECTED] Subject: Re: [time-nuts] Antennas in apartments To: Discussion of precise time and frequency measurement time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1; format=flowed Neon John wrote: On Sun, 16 Dec 2007 22:57:49 -0800, Hal Murray [EMAIL PROTECTED] wrote: Talk to your building superintendent. Offer to provide NTP service to the whole complex if he will help you setup a GPS antenna. I can see it now. Duh, how's this NTP stuff gonna help me unstop the toilet in 23? :-) What do people who want satellite TV do? Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. I think you need to read the law a little bit more carefully! What the law says, as I read it, is that you can put up radio, TV, or satellite antennas on your own property, regardless of covenants, home owners association rules, or zoning ordinances. But, if the property isn't yours, or isn't available for your exclusive use, it is up to the owner (or controlling authority) to decide whether you may or may not. The FCC's website has a QA section where they specifically answer a question about putting up an antenna that extends beyond the apartment/townhouse deck into the air space. They say that the law only controls what is allowed within the confines of the deck, and not what is allowed in the air space beyond the deck. -Chuck -- Message: 3 Date: Mon, 17 Dec 2007 16:14:52 -0500 From: Ronald Held [EMAIL PROTECTED] Subject: [time-nuts] Discussion of precise time and frequency measurement To: time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1 Since the moving option is out, perhaps I need to investigate whether I currently can get any inside or outside signal. Is ther3=e an inexpensive way given that I do not have any circuit assemble skills? The complex will allow dishes as long as the are completely inside the balcony(I speculate that it is at the behest of the local cable company). I do not recall seeing any dishes on building in my complex. If I can get a signal inside or outside, what then?
Re: [time-nuts] HP5359A non-linearities
In a message dated 12/17/2007 16:30:19 Pacific Standard Time, [EMAIL PROTECTED] writes: Have you looked at the programmers manual? Should be the way to go. Cheers, Magnus Hi Magnus, was hoping to avoid that :( Visi offers a graphical capture display for TI, but the version I have has only a limited capture range, and I don't know how to save the data yet. Thanks, Said **See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop000304) ___ 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] Antennas in apartments
Neon John wrote: On Mon, 17 Dec 2007 13:43:41 -0500, Chuck Harris [EMAIL PROTECTED] wrote: Neon John wrote: Federal law says that landlords cannot prohibit satellite TV dishes. Another one of those best laws money can buy. The implication for a solution to the GPS antenna problem is fairly obvious. I think you need to read the law a little bit more carefully! Should have figured you'd be the one to make that kind of pedantic reply. Really? I wasn't aware that I had a reputation for being a pedant. What the law says, as I read it, is that you can put up radio, TV, or satellite antennas on your own property, regardless of covenants, home owners association rules, or zoning ordinances. But, if the property isn't yours, or isn't available for your exclusive use, it is up to the owner (or controlling authority) to decide whether you may or may not. I'm neither interested in parsing individual sentences in a regulation (I hire a lawyer to do that for me) nor debating this guy's controlling status. As a landlord, I've been told that if I want to avoid a slew of legal fees and hassles, let the tenants put up their dishes as they wish as long as the placement is reasonable. As an observer, I notice that most every apartment complex I've observed follows that same guidance. And I explained the bounds of reasonable. I cannot imagine why that would put you in a huff. I'll rephrase. The implication for a solution to the GPS antenna problem is fairly obvious 99.999% of the time. Put the dish up, strap on a GPS receiver and see what happens. Sheesh. I long ago tired of the petty rules and regulations the city folk foist onto each other. So I bought a farm and do pretty much as I please. -Chuck Harris ___ 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] Ronald Held's main question
Hi Ronald, This list server is composed of three general classes of people. Those who 1) have just a passing interest in the subject, 2) those who delve into it on a professional or amateur working level and 3) Some seriously warped individuals who far exceed the distribution of what is considered normal (you know who you are!). Because of the above definition, the range of provided answers will cover many view points. Thus, you may find the responses difficult to sort out for your purposes. I may be wrong but am going to deduce from your last sentence, If I can get a signal inside or outside, what then ?, that you have had very little to no exposure to the field of Time and Frequency Metrology. In that regard, and to answer your question, I highly suggest reading the following NIST publications. # 1. The first is a general history of NIST and its standards. It is noteworthy because it gives a sense of why we are where we are today. http://tf.nist.gov/timefreq/general/pdf/1485.pdf # 2. The second one is a short paper that delves into the mechanics of Time Frequency measurement. This one will give you a basic understanding of how it is done. This paper is clearly part of a bigger publication, although I have not seen the whole publication. http://tf.nist.gov/timefreq/general/pdf/1498.pdf # 3. This is the - - - BIBLE - - - Strongly recommended This is a very large manual at more than 80 megabytes, but very well worth the time to download it. This NBS (NIST) publication, produced in 1974, should be the defacto reading material for any starting class in Time Frequency metrology. Why some idealist at NIST lost their marbles and decided they should not make it available on their WEB site is beyond me. Fortunately, it is available at the following Hawaii University site : http://digicoll.manoa.hawaii.edu/techreports/PDF/NBS140.pdf It seems that you have some need or want to make your computer more accurate from a TIME point of view. A number of approaches can be used for such an undertaking. If you are just looking to make you computer relatively accurate, a few computer programs are available that will synchronize your computer to a recognized NETWORK standard server. This method may be all that you need and it requires no local hardware and fussing with antennas and the like. Before spending money and physical effort that may not be necessary, please read through the 3 above references to determine if you really want to get involved to the level of additional hardware and expense. BillWB6BNQ Ronald Held wrote: Since the moving option is out, perhaps I need to investigate whether I currently can get any inside or outside signal. Is ther3=e an inexpensive way given that I do not have any circuit assemble skills? The complex will allow dishes as long as the are completely inside the balcony(I speculate that it is at the behest of the local cable company). I do not recall seeing any dishes on building in my complex. If I can get a signal inside or outside, what then? Ronald ___ 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] Ronald Held's main question
Hi Ronald, Here are 3 Hewlett Packard appnotes that are in the same vain as the NBS 140 booklet. In many ways these HP items are better written. The first one was written in 1961. The second one is an update (1974), as is the third (1976). Each are different and equally worth having on the shelf. http://cp.literature.agilent.com/litweb/pdf/5989-6171EN.pdf http://cp.literature.agilent.com/litweb/pdf/5989-6183EN.pdf http://cp.literature.agilent.com/litweb/pdf/5989-6247EN.pdf BillWB6BNQ WB6BNQ wrote: Hi Ronald, This list server is composed of three general classes of people. Those who 1) have just a passing interest in the subject, 2) those who delve into it on a professional or amateur working level and 3) Some seriously warped individuals who far exceed the distribution of what is considered normal (you know who you are!). Because of the above definition, the range of provided answers will cover many view points. Thus, you may find the responses difficult to sort out for your purposes. I may be wrong but am going to deduce from your last sentence, If I can get a signal inside or outside, what then ?, that you have had very little to no exposure to the field of Time and Frequency Metrology. In that regard, and to answer your question, I highly suggest reading the following NIST publications. # 1. The first is a general history of NIST and its standards. It is noteworthy because it gives a sense of why we are where we are today. http://tf.nist.gov/timefreq/general/pdf/1485.pdf # 2. The second one is a short paper that delves into the mechanics of Time Frequency measurement. This one will give you a basic understanding of how it is done. This paper is clearly part of a bigger publication, although I have not seen the whole publication. http://tf.nist.gov/timefreq/general/pdf/1498.pdf # 3. This is the - - - BIBLE - - - Strongly recommended This is a very large manual at more than 80 megabytes, but very well worth the time to download it. This NBS (NIST) publication, produced in 1974, should be the defacto reading material for any starting class in Time Frequency metrology. Why some idealist at NIST lost their marbles and decided they should not make it available on their WEB site is beyond me. Fortunately, it is available at the following Hawaii University site : http://digicoll.manoa.hawaii.edu/techreports/PDF/NBS140.pdf It seems that you have some need or want to make your computer more accurate from a TIME point of view. A number of approaches can be used for such an undertaking. If you are just looking to make you computer relatively accurate, a few computer programs are available that will synchronize your computer to a recognized NETWORK standard server. This method may be all that you need and it requires no local hardware and fussing with antennas and the like. Before spending money and physical effort that may not be necessary, please read through the 3 above references to determine if you really want to get involved to the level of additional hardware and expense. BillWB6BNQ Ronald Held wrote: Since the moving option is out, perhaps I need to investigate whether I currently can get any inside or outside signal. Is ther3=e an inexpensive way given that I do not have any circuit assemble skills? The complex will allow dishes as long as the are completely inside the balcony(I speculate that it is at the behest of the local cable company). I do not recall seeing any dishes on building in my complex. If I can get a signal inside or outside, what then? Ronald ___ 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.
