Delete the default frequency for WSPR in the 60 m band. Insert a warning

about same in the USer Guide.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7562 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

FrequencyList.cpp

@@ -45,7 +45,6 @@ namespace
       {3592600, Modes::WSPR},
       {5357000, Modes::JT65},
       {5000000, Modes::FreqCal},
-      {5287200, Modes::WSPR},
       {7038600, Modes::WSPR},
       {7076000, Modes::JT65},
       {7078000, Modes::JT9},

doc/user_guide/en/wspr.adoc

@@ -11,6 +11,9 @@ desired size.
 
 - Select an active WSPR frequency (for example, 10.1387 or 14.0956 MHz).
 
+IMPORTANT: If you will transmit in the 60 m band, be sure to choose a
+frequency that conforms with your local regulations.
+
 - Click *Monitor* to start a 2-minute WSPR receiving period.
 
 - If you will be transmitting as well as receiving, select a suitable