[aprssig] Some obscure APRS client questions
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Sat Nov 12 07:43:27 CST 2011
And while we're on the subject of .POS overlay files, there's a
specification subtlety that says that the first line is a description of
the file. And also that a line starting with a * is a comment. There
is NO requirement that the first line start with a *, but since it is a
"description of the file", APRSISCE/32 explicitly ignores it rather than
try to parse someone's "description" as a valid packet spec.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
PS. Every existing .POS file I've found has a description as the first
On 11/12/2011 8:38 AM, Randy Love wrote:
> On Fri, Nov 11, 2011 at 2:03 PM, Stephen H. Smith <wa8lmf2 at aol.com
> <mailto:wa8lmf2 at aol.com>> wrote:
> On 11/11/2011 1:16 PM, Andrew P. wrote:
> Greetings, all.
> 1. With a receive-only feed (radio or Internet), does it make
> sense to allow the user to create or edit objects? They can't
> send them to the public. Is there a need in general to be able
> to create private objects/items in a local APRS client?
> UIview handles these as a separate class of point objects called
> "overlays" (not to be confused with the overlays possible in
> Precision Mapping when used with UIview).
> These "overlays" are contained in a text file with the extension
> ".pos", that use the same format as over-the-air APRS position
> report. However, they only show on your own screen and are not
> They DO show in screen caps of the UIview map used with the
> UIiview web server which is very useful. For example when
> tracking balloon launches on my UIwebserver, I will pin the launch
> site and other nearby points of interest/reference as an "overlay"
> on the map.
> A typical "POS" file, which can contain any number of points,
> looks like this when opened in a text editor like Windows Notepad:
> ** Overlay Objects for N1VG Balloon Launch
> Launch!3524.78N/11757.90WO Launch Site
> RedRocks!3520.71N/11758.25WJ Red Rocks Park
> Baker!3515.90N/11604.48WJ City of Baker
> Note that the same control codes for symbol/icon display, used in
> over-the-air posits, works in these overlays.
> It should be noted that additional information can be saved for a
> overlay object by using a status > packet. For example:
> *NameIt :)!4240.50NX08300.00W?Main information here.- name up to 9 long
> *NameIt :)>use status for addition information, freq list, contact
> info, etc.
> * *** Mid Michigan MS-150 Day 1 Rest Stops 2011
> GAINES!4252.20N/08354.72W7Rest 1
> GAINES>Gaines Elementary School 300 Lansing St., Gaines
> BYRON!4249.46N/08356.93W6Rest 2
> BYRON>Byron High School 312 W Maple, Byron
> BANCROFT!4252.98N/08404.13W5Rest 3
> BANCROFT>Shiawassee Twp Fire Dept 625 E Grand River Rd, Bancroft
> LUNCH!4248.42N/08405.14W4Lunch for all riders
> LUNCH>Poe Residence 3745 E. Beard Rd. Morrice
> SHAFTBRG!4248.31N/08417.94W3Rest 5
> SHAFTBRG>Shaftsburg Elem. 7320 West Beard Rd., Perry
> WILLMSTON!4241.46N/08416.98W2Rest 6
> WILLMSTON>McCormick Park Putnam and High St, Williamston
> UI-View and APRSISCE/32 both support the file in this format.
> aprssig mailing list
> aprssig at tapr.org
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