the RF propagation model by Anita Longley and Phil Rice, still widely used after a half century. Going from one old report to another, I found the original 1968 CDC-3600 Fortran IV source code as an appendix
...and there's some C++ code and Python code in the mix. This looks like fun stuff to an old engineer like me; and some of my amateur radio friends too. Radio propagation is still an art among some hams these days. FORTRAN, well, that was my first programming language. I've sent you a private email, and I'll see if I can poke at this code myself. Thanks for posting notice of this work; your Web page shows good historic technical preservation at work. That's how it's done. Regards Herb Johnson -- Herbert R. Johnson, New Jersey in the USA http://www.retrotechnology.com OR .net preserve, recover, restore 1970's computing email: hjohnson AT retrotechnology DOT com or try later herbjohnson AT comcast DOT net