linsim is a computer program intended as a tool for Amateur Radio Digital Mode 
evaluation under varying HF propogation conditions.  

  Density variations versus altitude in the ionosphere
  Magnetic-ionic effects that cause polarization-dependent paths
  Non-uniformity of the ionospheric layers

linsim can be built on multiple computer operating systems;

FreeBSD(TM); Linux(TM), OS X(TM) and Windows(TM).
The latest version can always be found at:

  http://www.w1hkj.com/

Join the linuxham, NBEMSham or win-fldigi Yahoo group for support, news 
and updates on W1HKJ software:

  http://groups.yahoo.com/group/linuxham/join
  http://groups.yahoo.com/group/NBEMSham/join
  http://groups.yahoo.com/group/win-fldigi/join

