From: ve7cus@xxxxxxx Date: Mon, 27 Sep 2010 Time: 16:24:56
I was using compressed posits but I would never see the icon appear at my location so I guessed something did not like it so I changed back to uncompressed and everything was fine. Today, I decided to investigate and found when I used compressed jpskmail changed my longitude to east from west. What did I do wrong? Darrel
Darrel You may find my programs MICENC and APRSDEC useful, at: http://www.tapr.org/~g3nrw/They let you create and decode compressed posit strings. In fact, APRSDEC will decode all known types  of APRS string. I found it invaluable when writing the APRS specification, in checking out the APRS messages that actually appear on-air.
If you create an input file containing your compressed location, APRSDEC will give you the equivalent uncompressed position. You can then compare that against what jpskmail is telling you.
 All types known in 2000, when I originally wrote the program. As far as I know, it should still be valid. However, if anyone discovers any current APRS message types that do not decode properly, please let me know.
-- 73 Ian, G3NRW