Hessu,
I just uncovered a problem with aprs.fi in dealing with DStar objects with embedded spaces in the ID. If you start at:
https://aprs.fi/#!call=KJ4ERJ*
And scroll down looking for the "KJ4ERJ B" (not to be confused with the KJ4ERJ-B) and click on that link, it will take you to:
https://aprs.fi/#!call=a%2FKJ4ERJ+B
which says "a/KJ4ERJ+B was not found in the location database."
But, if you put KJ4ERJ<space>B into the Track callsign box and hit Search, it takes you to:
https://aprs.fi/#!mt=roadmap&z=11&call=a%2FKJ4ERJ%20B&timerange=3600&tail=3600
and displays properly. If the first link had used a %20 instead of the +, it works as in:
https://aprs.fi/#!call=a%2FKJ4ERJ%20B
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
PS. Don't you just wish entry field and URL encoding/decoding used the same substitutions?