Latitude/Longitude Errors when shown on APRSIS32

[mikecapper]

Hello, When I have set my coordinates as 53 35 54 N & 02 20 23 W using the configuration settings. Why when it posts data to APRSIS32, my coordinates change?
the change is minimal, but i cannot understand why. If you use APRS, check out my home station MB7UMC that is shown correctly, but my weather details under M0MSC are shown approximatly 1/2 mile away!

Many thanks
Mike

[steve]

You are confusing degrees/minutes/seconds (which Cumulus uses) with the degrees and decimal minutes format which APRS uses. According to APRS, MB7UMC is at 53°35.54' N 2°20.23' W which is not 53 degrees 35 minutes 54 seconds latitude. If those co-ordinates really are correct, you need to convert them to d/m/s for entry into Cumulus.

[mikecapper]

Hello Steve, I'm using version 1.9.3 build 1059.

I'm using the APRS/CWOP setting, with a correct user and password. Please have a look on APRSFI, you will see the error in my WX location.

regards
Mike

[steve]

Sorry, Mike, I spotted what the problem was and edited my post; you weren't online when I started.

[steve]

If your MB7UMC co-ordinates of 53°35.54' N 2°20.23' W are correct, those translate to

53 deg 35 min 32 sec N
2 deg 20 min 14 sec W

[mikecapper]

OK, thanks for your assistance, i will put these in and see what happens. I shouldn't try to rush these sort of things!

Once again, many thanks for your help.
Mike

[mikecapper]

Almost there! near enough.
thanks

[steve]

The slight difference is because the one second resolution that Cumulus uses (which is more than adequate for weather purposes) is slightly larger than the one hundredth of a minute resolution that APRS uses. If it's an issue, you can stop Cumulus, edit cumulus.ini and supply the co-ordinates (in decimal degrees) to any resolution you want, using the Latitude= and Longitude= lines, as long as you don't subsequently change anything using the station settings screen (in which case they will get reset to the nearest second).