Always Mount a Scratch Monkey Do you manage your own servers? If you are not running an IDS/IPS yer doin' it wrong... ... The cannibals threw a reception, toasted the bride & barbecued the groom.
On Mon, 3 Apr 2017 20:53:44 +0100, The Natural Philosopher declaimed the following:
Uhm, every where I've been, a "cup" is considered to be 8 fluid ounces;
2 cups is a pint (ignoring the UK 20 ounce pint and related Imperial vs US), 2 pints is a quart, and four quarts is a gallon.
Granted -- a "cup" of coffee or tea is based upon 6 ounces, and I forget what rice cookers are calibrated in...
And miles per gallon makes a more meaningful measure to me than liters per km. {I have half a tank [10 gallons]: how far will that get me? Lot easier to do 10 * MPG than to work out an inverse [approximating 4l per gal] 40/l/km}
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Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
On Mon, 3 Apr 2017 17:48:21 -0400, rickman declaimed the following:
That degree of error probably also meant this was the days of "Selective Availability" -- when even a good constellation produced error circles of 100 feet or more (or is that reported in meters on my units -- need to check the manual). But near major ports, even in the days of SA, there are differential GPS transmitters -- which do need extra receiver equipment...
Since SA was turned off, most GPS units are good for 30 feet (meters), and with WAAS/EGNOS, 10 feet (meters) or better is common.
WAAS/EGNOS transmit on the regular (civil) GPS frequencies, providing correction data for poor quality constellations. Differential GPS provides very detailed correction but only near the DGPS transmitter (basically, DGPS sends the difference between the GPS constellation results at that port and the surveyed location of the port). Most current production GPS decode WAAS (two satellites for west and east CONUS) or EGNOS (Europe).
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Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
On Mon, 3 Apr 2017 15:42:12 -0400, rickman declaimed the following:
The Baker's Dozen came about as a safety measure. Royalty ruled that a dozen loaves of bread must weigh some number of pounds (1 lb per loaf, as I recall). To avoid getting hanged for short-changing the weight, bakers would throw in an extra loaf.
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Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
You don't see to understand how GPS works. It is triangulation based on your distance from the various satellites. If there are few of them visible and if they are clustered close together and worse, if they are all near the horizon, the math will not give you a highly accurate solution no matter what augmentation you use. This is called "dilution of precision". It has nothing to do with selective availability or differential augmentation. The only solution is to have more satellites in the sky so the rare sparse constellations do not occur, which is what they have done eventually.
The WAAS corrections have to do with fine corrections for satellite orbits and clocks as well as atmospheric disturbance to the signals which can not be easily corrected by other means. They are also local (relatively speaking) in that the calculations are performed for the ionospheric distortions on the signal paths to your location. None of this will do anything to minimize the impact of a poor constellation.
Sat A - O--------------You | | | | | | Sat B - O
Sat A - O--------------You __,,--''`` Sat B - O--``
The angle between the two paths determines the size and shape of the error ellipse. In the former case the error will be very close to a circle with a minimum radius. In the latter case the difference in time of arrival will create an error ellipse that is very elongated with a poor dilution of precision. There is no method of correction.
It's the amount of paperwork required for a seemingly simple modification that's the main stumbling block.
Nope. Inches of mercury everywhere.
I have seen some altimeters with two scales: inches and millibars. I think your typical glass cockpit (again, for the well-heeled) will switch with the push of a button. But most altimeters here can be set strictly by inches.
Interesting thought: on powered planes over there with constant-speed props, are the manifold pressure gauges marked in inches of mercury? They are here - as well as the appropriate places in the POH.
As of 2020, ADS-B (either Mode S with 1090ES or UAT) will be mandatory for all aircraft operating in U.S. airspace classes A, B, and C, plus class E above 10,000 feet.
:-) I wonder what Australians have...
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Yes, and the longer it takes, the more the loss/inconvenience for users who had to make a choice and guessed wrong...
When progress causes standards in a market to change often, the costs also soar. (It'll be a long time before I transition all my DVDs. I may wind up skipping Blu-Ray entirely. ;-)
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-michael - NadaNet 3.1 and AppleCrate II: http://michaeljmahon.com
And so is base 14 (lb/stone), base 16 (oz/lb), base 8 (pts/gall), base
3 (feet/yard), and base 20 (cwt/ton). They're all perfect for division. And dividing something long up by 12 is so easy when you just have to measure a number of feet and decimal part of a foot to get the length to be divided, then measure each portion in inches and decimal parts of inches. Fantastic.
in 60 years of UK 13A sockets that's something I have never ever seen or heard of.
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"Socialist governments traditionally do make a financial mess. They
always run out of other people's money. It's quite a characteristic of them"
Margaret Thatcher
Contrariwise the massive issues caused by imposing the wrong standard..
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New Socialism consists essentially in being seen to have your heart in
the right place whilst your head is in the clouds and your hand is in
someone else's pocket.
My car's average fuel consumption is 0.06 square millimetres, or 6 litres per 100km or about 47mpg (imperial) or about 39mpg (US) - all but the first and last are easy enough for me to work with, but if I want to know how far I can go with what remains in the tank then I can just look at the display on the dashboard which tells me.
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Steve O'Hara-Smith | Directable Mirror Arrays
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Indeed. In the case where the appliance is double insulated and plastic cased it is deemed that no earth connection is necessary: In that case the earth pin serves no other function than to open the shutters.
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Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.
Ayn Rand.
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