14lbs = 1 stone. and people I know in the UK use miles as well as kilometers.
Scott
zl1chm / n0hok
Auckland New Zealand
Sent from my iPhone
On 29/12/2011, at 6:09, Howard Kaufman <[log in to unmask]> wrote:
> Let's see.
> I am going back to high school in my memory.
>
> The metric system is a decimal system, rather like our money system.
> The basic units are
> Measurement of distance, the meter.
> The measure of weight the gram,
> The measurement of volume the leader.
> I think that distilled water with a density of 1 means that a leader of
> water weighs 1 kilogram, but am not sure about that.
>
> Most of the civilized world uses the metric system. Therefore we in the
> United States have to convert from metric to the old English system, which
> the English do not use any more. G-D knows how much this nonconformity
> costs us every year.
>
> A meter is just over a yard in length, I think 39.1 inches. making a
> centimeter about .391 inches in length.
> The system was based on the diameter of the earth at the equator, which is
> 10,000 kilometers. I think that's right.
>
> a Kilogram is about 2.2 pounds. I have no idea how this compares to weight
> in stone.
>
> 28 grams of water equals an ounce.
>
> The system was to calculate temperature in centigrade, with 100 increments
> between the freezing and boiling point of pure water as measured at sea
> level.
>
> So if we were using the metric system, a half wave dipole, would be 20
> meters in length, or 10 meters either side of the center feed point. Since
> a yard is less than a meter in length, and that difference is multiplied for
> every meter, a formula to convert the length is necessary.
> So frequency in mhz, divided in to 468 gives you the total length of a half
> wave dipole.
> at 7 mhz, 7 in to 46 is 6 with a remainder of 4. 7 in to 48 is 6 with a
> remainder of 6.
> 7 in to 60 is 8 with a remainder of 4.
> This gives a figure of 66.8 total length, or 33.4 feet per side. Since
> their are 12 not 10 inches to a foot, this comes out to 33 and 4 tenths of a
> foot, about 33 feet 5 inches.
> actually I think it's 33 feet 4.8 inches. Close enough for government at
> this frequency, but if you were working at 900 mhz frequencies, quite
> critical.
> Others who know better can rip this little story to shreds.
>
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