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<p>If you decide to amend the APRS spec to standardize on a wind
speed measurement,<i> please, please</i>, update the specification
and not just put the changes on your web pages so people have to
wade through stuff that includes your thoughts, plans, dreams, and
experiments.</p>
<p>While you're at it, update the spec with the rest of the changes
that have been promulgated since it was written so everything is
in one place.</p>
<p>Thank you.<br>
</p>
<br>
<div class="moz-cite-prefix">On 10/14/2016 10:47 AM, Robert Bruninga
wrote:<br>
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cite="mid:4978b77a6bbe6cb7c7eb18bb89599737@mail.gmail.com"
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<p class="MsoNormal">AUTHORS,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The APRS spec is confusing and uses WIND
SPEED in Knots in some places and in MPH in others. This has
been with us from the beginning. But with more and more code
being put into hardware and not easily upgraded software,
should we fix this?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I think many existing radios and clients
just decode them all as if they were MPH anyway (metric
countries convert MPH to KPH, or do they convert KTS to KPH?)</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">*
Raw Weather Report</span> <br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">*
Positionless Weather Report (
ccccssssggggttttrrrrppppPPPPhhhbbbbbb )</span> <br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">*
Complete Weather Report (
DIR/SPDggggtttttrrrrppppPPPPhhhbbbbbb )</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">*
Storm Data (DIR/SPD/ST/www^GGG/ppp>RRR&rrr%ggg</span>
<br>
<br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">ssss
= sustained one-minute wind speed (in mph).</span> <br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">gggg
= gust (peak wind speed in mph in the last 5 minutes).</span>
<br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">SPD
= the speed is expressed in knots.</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">www
= Sustained wind in knots</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">GGG
= Gust wind in knots</span> <br>
<br>
Should we change it to all MPH to get rid of this potential
for confusion, or will we just create more?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Bob, WB4APR</p>
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<br>
<div class="moz-signature">-- <br>
<font face="Present" size="+1">"The world of goodness is filled
with fleas."</font><br>
<div class="moz-signature"><font face="Kauflinn Bold"><small> <br>
<font face="Kauflinn">Bob Harris<br>
Can MOTCH Katmai Henry David Thoreau UDX Bda UD
(1992-2005)<br>
Longmeadow Bradford Torrey CD (2001-2014)<br>
Ch Silvercreek Gossip Girl<br>
Bath, NH </font></small></font></div>
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