This page is provided for informational purposes only. EZNEC-ARRL is not one of my commercial products. It was donated to the ARRL, and I receive no monetary benefit from it. Please contact the ARRL if you have any additional questions about the program, its installation, or its use, or about the ARRL Antenna Book.

EZNEC-ARRL is a special version of EZNEC v. 3.0 or EZNEC v. 4.0 which is included on the ARRL Antenna Book CD. EZNEC-ARRL v. 3.0 is included with the 20th Edition and EZNEC-ARRL v. 4.0 with the 21st Edition. It operates as a normal EZNEC demo program except when a specially "signed" EZNEC description file (included on the Antenna Book CD) is loaded. When analyzing a "signed" file, EZNEC-ARRL becomes a fully functional standard type EZNEC program. Both EZNEC-ARRL v. 3.0 and EZNEC-ARRL v. 4.0 will function with "signed" files from any Antenna Book edition. No other "signed" files are available except the ones furnished with the Antenna Book, and EZNEC-ARRL can be obtained only by purchasing the Antenna Book.

If you are an EZNEC-ARRL v. 4.0 user, you can update your program to incorporate the latest bug fixes and manual revisions by downloading and installing the latest EZNEC v. 4.0 demo. After running the demo program installation, your program will still operate as the ARRL version rather than a plain demo, and it will be updated to the latest revision.