WaveMaker schreef:

I downloaded the NEC source code from http://www.qsl.net/m5aiq/nec.html

My compiler is GNU FORTRAN (g77).

The compile error is: "Reference to intrinsic function 'SECNDS' as if
it were a subroutine at (^)"

My FORTRAN is a bit rusty, before I go climb that hill, can a wise old
coder offer a fix?

You could download my slightly modiefied Nec2 source code at
http://home.ict.nl/~arivoors/Nec2dXS_src.zip

I once encountered similar problems. You could compare both sources to
see what I changed to overcome the error message.

Arie.