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Posted: 5/2/2016 10:14:31 PM EDT
PK88 setup for APRS Fill-in digipeater.
When I enter what I think are the correct coordinates, it beacons and shows location of Digipeater about 40 miles West of me. It's me, and I can't for the life of myself determine how I'm entering them improperly. you can see it on aprs.fi @ K4CDN-3. If you have any idea on how to figure/enter coordinates correctly please message me. 
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Posted: 5/2/2016 10:27:15 PM EDT
[#1]
On aprs.fi map, you can hover your pointer and see latitude and longitude for the icon. If the latitude matches what you entered, it's possible you just transposed some longitude numbers from your GPS or whatever the source was when you entered them.
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Posted: 5/2/2016 11:07:29 PM EDT
[#2]
Quote HistoryQuoted:
On aprs.fi map, you can hover your pointer and see latitude and longitude for the icon. If the latitude matches what you entered, it's possible you just transposed some longitude numbers from your GPS or whatever the source was when you entered them. I've done this a few times, even have it right down to where I'll have it in my Dad's building....and still it shows it one county over...? I'll try it again, tomorrow-thanks for the reply! |
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Posted: 5/2/2016 11:22:06 PM EDT
[#3]
I wish I had some experience with that equipment but the extent of my APRS experience so far is a TNC Pi and APRSdroid. Good luck, anyway.
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Posted: 5/3/2016 8:23:51 AM EDT
[#4]
This may be obvious, but the obvious stuff is sometimes overlooked: If you are sure the coordinates are accurate and corret, make sure you are putting significant accuracy (i.e. figures after the decimal) into the location beacon. If you don't go far enough, it will throw the location off.
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Posted: 5/3/2016 12:38:58 PM EDT
[#5]
That reminds me, there is a setting in both of the APRS programs I have used to intentionally degrade accuracy.
Another interesting bit about APRS tracking. Lots of folks I have followed on apsr.fi have their packets configured to contain speed of travel. Self incriminating.  |
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Posted: 5/3/2016 6:35:17 PM EDT
[#6]
I hover the map, get a general area that I'd like it to show:
!3455.52N/08571.10W enter that in and wind up in Alabama? at least with !3453.39N/08228.40W I was in SC! I'm totally missing a piece of the pie here...... |
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Posted: 5/3/2016 7:06:26 PM EDT
[#7]
You need to check the format
DDD is XX.xxxx -XXX.xxxx DMS is NXX xx'xx.xxx WXXX xx'xx.xxx DMM is NXX xx.xxx WXXX xx.xxx You can not simply move around the decimal. |
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Posted: 5/3/2016 7:30:29 PM EDT
[#8]
Quote HistoryQuoted:
You need to check the format DDD is XX.xxxx -XXX.xxxx DMS is NXX xx'xx.xxx WXXX xx'xx.xxx DMM is NXX xx.xxx WXXX xx.xxx You can not simply move around the decimal. I get that, but was told by the Gent from whom I purchased, the format shown above is the correct way for this unit???????? |
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Posted: 5/3/2016 9:24:15 PM EDT
[#9]
Best I can tell the APRS standard is DDMM.mm (Degrees Minutes . decimal minutes)
K4CDN-2 shows as 3444.03/8149.78 Where is it supposed to be? As a guess, if 34.5552 / 08571.10 is in decimal degrees, then what you need is 3433.31 / 8542.66. Although those decimal degress are also in Alabama, so give us a location in some known format. |
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Posted: 5/3/2016 10:01:35 PM EDT
[#10]
34.890313
-82.04757999999998 is a close enough for me set of coordinates from a coordinate plotting page I randomly looked up |
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Posted: 5/3/2016 10:08:03 PM EDT
[#11]
Quote HistoryQuoted:
34.890313 -82.04757999999998 is a close enough for me set of coordinates from a coordinate plotting page I randomly looked up That's in South Carolina according to Google maps. In APRS format that would be 3453.42 / -08202.85 |
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Posted: 5/4/2016 3:22:56 AM EDT
[#12]
Ah, so the coordinate format is the problem!
Yeah it is tough with surveyors using degrees, minutes, seconds, Geocachers using degrees, minutes and decimal minutes, and others using degrees and decimal degrees formats among others. Then you get into datums. NAD 27, WGS 84, etc. It can be pretty confusing if you haven't played around with a GPS for a while. Here is a link that explains the coordinate format the system expects to see. This also might be of use to you. APRS.fi can display the coordinates on the map in APRS format. |
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Posted: 5/4/2016 7:16:52 AM EDT
[#13]
Quote HistoryQuoted:
That's in South Carolina according to Google maps. In APRS format that would be 3453.42 / -08202.85 Quote HistoryQuoted:
Quoted:
34.890313 -82.04757999999998 is a close enough for me set of coordinates from a coordinate plotting page I randomly looked up That's in South Carolina according to Google maps. In APRS format that would be 3453.42 / -08202.85 Ok Thx! I'm away for a few day so I'll try when I return. |
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Posted: 5/9/2016 7:06:57 PM EDT
[#14]
It worked! Thank u!
Now for a new thread.... TNC-X with Pi digipeater with display to monitor |
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