Re: [time-nuts] HP quality

2011-09-12 Thread Poul-Henning Kamp
In message 20110911230455.257daa0...@locke.alientech.net, Mike S writes: [...] along with ISO 900*, which amounts to you can make crap, as long as you document it and try to do better. ISO9000 has no requirement that you try to do better. ISO9000's only requires that you can document how

Re: [time-nuts] 60 Hz graphs

2011-09-12 Thread Poul-Henning Kamp
In message 20110912062205.0723a800...@ip-64-139-1-69.sjc.megapath.net, Hal Mu rray writes: Here is a time step on the machine collecting the data. http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/60Hz-g14.png http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/60Hz-g14-freq.png In your

[time-nuts] GPS Antenna

2011-09-12 Thread Miguel Gonçalves
Hi all! First let me introduce myself: I am a time nut since 1996 (former admin of a stratum 2 server: bug.fe.up.pt) but college and other priorities kept me away from my obsession. The other day I happened to buy a Garmin 18 LVC unit and installed it in the roof in my company. It has been

Re: [time-nuts] HP quality

2011-09-12 Thread J. Forster
I prefer the precis. (which apparently he never said). BTW, I thought the bucket of marbles test was pretty cute. -John == On 9/11/11 7:00 PM, Jim Lux wrote: On 9/11/11 3:14 PM, gary wrote: Since Demming is also the father of SPC, I'd like to know the context of that

Re: [time-nuts] HP quality

2011-09-12 Thread Brooke Clarke
Hi: When I was working there was an on site class that lasted many weeks on Statistical Process Control. The initial part had to do with the various ways of measuring groups of products and the charts to display the data. The idea was to get the average and standard deviation for each

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Miguel Gonçalves
Hi Chris! Here and on ntp-questions always helping me out! Thanks! Moving it up to the roof would be difficult. Would have to talk to all neighbours to ask permission to run a cable to the roof. I'll have to keep it at this location. Anyway, in position hold I would assume that using 2

Re: [time-nuts] GPS Antenna

2011-09-12 Thread David VanHorn
Moving it up to the roof would be difficult. Would have to talk to all neighbours to ask permission to run a cable to the roof. I'll have to keep it at this location. Although we own our building, for other reasons I was under similar constraints. I put our antennas as high as possible in a

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Chris Albertson
2011/9/12 Miguel Gonçalves m...@miguelgoncalves.com: Hi Chris! Here and on ntp-questions always helping me out! Thanks! Moving it up to the roof would be difficult. Would have to talk to all neighbours to ask permission to run a cable to the roof. I'll have to keep it at this location.

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Miguel Gonçalves
Hi! It's an apartment. I'll check today where south is to see what I can do. Two last questions about clockstats 55816 60529.233 127.127.30.0 3524834928.99971 2011 255 16 48 49 48 rstat 08 dop 0.0 nsat 12,4 traim 1,0,0 sigma 54 neg-sawtooth 13 sat 38808008 I was wondering what does

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Azelio Boriani
South? Are you sure? GPS SVs aren't TV broadcast satellites... On 9/12/11, Miguel Gonçalves m...@miguelgoncalves.com wrote: Hi! It's an apartment. I'll check today where south is to see what I can do. Two last questions about clockstats 55816 60529.233 127.127.30.0 3524834928.99971

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Dave Martindale
In theory at least, a single satellite is enough to provide timing in position hold mode. However, that assumes you get a direct line-of-sight signal, with no multipath. A reflected signal has additional delay that the GPS receiver cannot factor out if it's receiving only one satellite. If it

Re: [time-nuts] GPS Antenna

2011-09-12 Thread David J Taylor
South? Are you sure? GPS SVs aren't TV broadcast satellites... Particularly if you are at a more northerly latitude, if you need to choose one aspect or the other, the southern aspect may provide better coverage. Cheers, David -- SatSignal software - quality software written to your

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Chris Albertson
On Mon, Sep 12, 2011 at 11:13 AM, David J Taylor david-tay...@blueyonder.co.uk wrote: South? Are you sure? GPS SVs aren't TV broadcast satellites... Particularly if you are at a more northerly latitude, if you need to choose one aspect or the other, the southern aspect may provide better

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Azelio Boriani
Yes, if you are at 55 degrees (N or S) you have satellites at most straight on your head and I think you must start facing just south, say, at 70 degrees and beyond. I'm in Italy at 45 degrees north (JN55BK QTH locator) so no such a problem. 73's de IW2DMO On Mon, Sep 12, 2011 at 8:29 PM, Chris

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Chris Albertson
On Mon, Sep 12, 2011 at 1:31 PM, Azelio Boriani azelio.bori...@screen.it wrote: Yes, if you are at 55 degrees (N or S) you have satellites at most straight on your head and I think you must start facing just south, say, at 70 degrees and beyond. I'm in Italy at 45 degrees north (JN55BK QTH

Re: [time-nuts] GPS Antenna

2011-09-12 Thread Azelio Boriani
OK, now I see (the indoor GPS unit) and agree (a window facing south). 73s On Mon, Sep 12, 2011 at 11:19 PM, Chris Albertson albertson.ch...@gmail.com wrote: On Mon, Sep 12, 2011 at 1:31 PM, Azelio Boriani azelio.bori...@screen.it wrote: Yes, if you are at 55 degrees (N or S) you have