README for GW87

GW87 was developed on a CDC main frame computer.
Its original source code has been made available on this FTP site.
At the request of a user, it has been compiled to run on a PC.

WARNING:
  This software is here "AS IS".
  It has not been validated by NTIA/ITS for this conversion.
  There are no funds to do so.
  To accept any data defaults, a "/" must be entered (a carriage return alone
  will not work).
  There is no documentation other than this and the source code.

TWO Versions:
  GW87
    Compiled with FTN77 32-bit Salford Fortran compiler.
    It will probably only run under a Windows 95/98 or Windows NT system.
  GW87PC
    Compiled with MicroSoft Fortran Version 4.0.
    16-bit DOS version.

INSTALLATION for GW87:
  Put GW87.EXE anywhere you want.
  Put SALFLIBC.DLL into your C:\WINDOWS\SYSTEM directory.
  (This may be different on Windows-NT systems).
INSTALLATION for GW87PC:
  Put GW87PC.EXE anywhere you want.


I have proposed to a sponsor to add a groundwave model to the HF
propagation models ICEPAC/VOACAP.  If that gets funded, I may add
a GUI interface onto GW87 and make it available as a simple
groundwave model.
