.TH SOMNEC 1 
.\" NAME should be all caps, SECTION should be 1-8, maybe w/ subsection
.\" other parms are allowed: see man(7), man(1)
.SH NAME
somnec \- Compute Sommerfield-Norton Ground Grids
.SH SYNOPSIS
.B somnec
.SH "DESCRIPTION"
.B somnec
is a program 
to generates grids used by the NEC2
program for the Sommerfeld-Norton approximation to realistic grounds.
It allows interactive user input of relative dielectric constant, ground
conductivity, and frequency in MHz.  
The output for use by
.B nec2
is written out as binary unformatted file.  The program .B nec2
reads this in, if the Sommerfield Norton Ground is specified in
the
.B nec2
input cards by
the presence of a suitable suitable  Ground Parameters Card i.e. a
.B GN
card with
.I IPERF
set to 2 (coluns 3-5).  Hence the
user is also prompted for a file name, and the grid arrays are written to the
file.  

.SH OPTIONS
Due to the age of the program, it expects its input to be in the form
of punched cards fed into a hopper.  It doesn't currently take any
options, instead the name of the input and output files must be
entered once the program has been run.
.SH "SEE ALSO"
nec(1)
.PP
It is fully documented as part of the report 
.IR "Numerical Electromagnetics Code (NEC)
-- Method of Moments", available as a printed publication in three
parts covering the theory of operation, the program code and the
users' manual.

.SH BUGS
This program was keyed in by hand from a printed listing.  Thus
it is possible that some extra bugs have been introduced. Unformatted
binary files are often a fortran minefield, particuarly if transported
between systems. 

.SH AUTHOR
This manual page was written by  <alanb@chiark.greenend.org.uk>.
The original program was developed by G. J. Burke and A. J. Poggio of
Laurence Livermore Laboratory.