CHANGE: check if aprs data only at monitor channel.

Author: andreaspeters

src/umain.pas

@@ -899,9 +899,10 @@ procedure TFMain.TMainTimer(Sender: TObject);
     GetAutoBin(i, Data);
 
     // handle aprs messages. APRS Messages can only be at the Monitoring Channel.
-    GetAPRSMessage(Data);
+    if i = 0 then
+      GetAPRSMessage(Data);
 
-    if (Length(Data) > 0) then
+    if Length(Data) > 0 then
       AddTextToMemo(i, Data);
   end;
 end;