Peter Voelpel wrote:
>
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of K7LXC@aol.com
> Sent: Mittwoch, 21. Januar 2009 18:58
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] mast stacking calculation
>
>
> In a message dated 1/21/2009 9:02:18 A.M. Pacific Standard Time,
> towertalk-request@contesting.com writes:
>
>>> You are referring to the MARC (Mast, Antenna and Rotator
>>> Calculator)
> Program available from Champion Radio Products. It's $10 and can be
> emailed to you.
>
>>> Cheers,
> Steve K7LXC
> _www.championradio.com_ (http://www.championradio.com)
> Cell: 206-890-4188
>
>> Is that program working with si-units to be useful outside the USA?
>
>
>
> Since I don't know what si-units are, I'd have to say no. There are many
> conversion programs on the internet so you should be able to use it by
> converting them.
SI = Systeme International aka Metric
>
> Cheers,
> Steve K7LXC
> Champion Radio Products
>
>
>
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>
> Hi Steve,
>
> For your information: http://physics.nist.gov/cuu/Units/
>
> If I remember right NASA already had a space flight problem in the past by
> wrong converted units
Ahem.. (as a JPLer).. NASA has used Metric (SI) units for decades, at
least in deep space exploration. US manufacturers do not always do so.
In the Mars Climate Orbiter fiasco, the interface control document (ICD)
for data from Lockheed said metric, the JPL navigators assumed the data
was metric (Newtons for thrust), but Lockheed was putting the data in as
pounds, so it's off by a factor of 4.5 or thereabouts.
Lockheed screwed up by not giving the data in the specified form.
JPL screwed up by not checking and assuming that Lockheed did what they
said they were going to do.
>
> 73
> Peter
>
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