[aprssig] Snow vs Wind speed clarification
Alexander Sack
pisymbol at gmail.com
Thu Jul 21 13:27:50 EDT 2011
http://www.aprs.org/aprs11/spec-wx.txt
I don't quite understand you Bob! :-)
So the original specification lists 's' for both wind speed as well as
snow fall in positionless format.
Base on the link above:
- 's' should really be snowfall now
- But if the software letter is 'W', they it can't be snowfall
- Normally wind speed would be taken from the XXX/YYY<rest of WX
sentence> format
Is that correct?
Now you also mention that the characters '/W' and '\W' can be used
interchangeably with '/_' or '\_' in the APRS Data field.
Not to pick on anyone's packet but:
N1MIW-1>APU25N,K1IMD-14,KA2RLM-15,WIDE2*:@070113z4139.23N/07134.69W_206/000g015t076r000p000P000h74b10118/WX
So the '_' already denotes this as a WX string. However what does the
'/WX' serve? Where would I find any of the characters you mention
above? Isn't '_' sufficient to denote a WX string?
Finally, can I assume that the software character will NEVER conflict
with the weather data initials (e.g. c, s, g, etc.)? i.e. Does it act
as a delimiter between the two?
[on a side note, what is the most update list of software characters?]
Thanks!
-aps (KC2ZSX)
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