Ontar Corporation is proud to be the official distributor of the Air Force Research Laboratories MODTRAN source code. Included on the MODTRAN CD are the FORTRAN source code, PC executable, test cases, and documentation. In addition, FORTRAN source code and makefiles for a UNIX operating system are also included. This product is ideal for experienced users of MODTRAN and/or users who do not have access to a MS Windows environment.

There are several steps to obtaining the MODTRAN source code CD.

1. Download a Non-Disclosure Agreement (NDA)
2. Sign the NDA and fax a copy to AFRL (781-377-3138), AND Ontar Corporation (978-681-4585).
3. Arrange for payment of the license/distribution fees, click here for fee information and look for Product Name "USAF NDA/License Fee for MODTRAN4.0". IMPORTANT NOTE: All MODTRAN orders must be prepaid. No purchase orders will be accepted for MODTRAN payment.