What is the coordinates format that is used in the configuration file?

wb2osz / direwolf

Dire Wolf is a software "soundcard" AX.25 packet modem/TNC and APRS encoder/decoder. It can be used stand-alone to observe APRS traffic, as a tracker, digipeater, APRStt gateway, or Internet Gateway (IGate). For more information, look at the bottom 1/4 of this page and in https://github.com/wb2osz/direwolf/blob/dev/doc/README.md

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What is the coordinates format that is used in the configuration file? #539

Closed mikeym88 closed 2 months ago

mikeym88 commented 2 months ago

I'm taking a look at the beaconing properties in the configuration file here: https://github.com/wb2osz/direwolf/blob/master/conf/generic.conf#L420-L429. The coordinate format is one that I do not recognize. What is the format? Is the first number the degrees and the second number is the minutes and seconds combined into 1 decimal number?

How would I convert the Prime meridian (Greenwich) into this format? DMS format: 51° 28′ 40.1″ N, 0° 0′ 5.3″ W, Decimal format: 51.477806, -0.001472

mikeym88 commented 2 months ago

Confirmed: the second number is the minutes and seconds combined into a decimal number.

wb2osz commented 2 months ago

The format is degrees ^ minutes and fractional minutes. The GPS NMEA and APRS positions/objects also use degrees and minutes and fractional minutes without a separator after degrees. This is explained in the User Guide.

73, John WB2OSZ