http://it.aprs.fi - wrong position on the map

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Claudio IW1QLH

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Apr 10, 2016, 5:31:43 PM4/10/16
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Hi all,
I'm writing a Android application that send the position via APRS servers.

I sent my position (IW1QLH-9) from a lighthouse in Imperia (Italy)
Google Maps: https://www.google.it/maps/@43.883001,8.0385542,18z
Latitude 43.883001 Longitude 8.0385542 ==> 43° 52' 58.8036" N   8° 2' 18.79512" E
my application sent: !4352.58N/00802.20E>
on http://it.aprs.fi the point is in the sea, with the pointer on the lighthouse I read
43°52.96' N 8°2.33' E, JN43AV in the coordinate box

I want to find out what I am doing wrong.


73
Claudio - IW1QLH

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Lynn W Deffenbaugh (Mr)

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Apr 10, 2016, 9:17:36 PM4/10/16
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APRS coordinates are in degrees and decimal minutes.  Your position should have been:

!4352.98N/00802.31E>

The .98 is your 58.8036 minutes / 60.  The .31 is your 18.79512 minutes / 60.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
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Nosey Nick VA3NNW

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Apr 11, 2016, 12:14:54 PM4/11/16
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KJ4ERJ wrote:
APRS coordinates are in degrees and decimal minutes.  Your position should have been:
!4352.98N/00802.31E>

Worth looking up "APRS101" - http://www.aprs.org/doc/APRS101.PDF - and reading it cover to cover. The position format you're looking for is on p23. If you count compressed, uncompressed, objects, Items, NMEA, MIC-E, with/without timestamps, There are also probably a dozen other position formats to choose from. You'll probably be screaming "WHY OH WHY" by the end of it, but you'll understand the protocols and may even achieve enlightenment   ;-)

Will your android app be free, and/or any good? Would love to give it a try - Let us know the details when you publish it!

Nick VA3NNW
 

Claudio IW1QLH

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Apr 17, 2016, 3:12:51 AM4/17/16
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Many thanks for replies,
the next version of https://play.google.com/store/apps/details?id=iw1qlh.alog.app will contain a function to send position to APRS.


73
Claudio - IW1QLH

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