No, you don't. Simply run AN-SOF and start using it. If prompted for a license, go to the AN-SOF main menu > Help > Activation Key. Click the Trial Key button in the displayed window, followed by the Activate button. AN-SOF will restart and be ready for use in trial mode.

The trial period lasts 30 days, during which software evaluation support is available. However, you can continue using AN-SOF Trial after the evaluation period ends.

The Trial version is limited to 50 unknowns (segments + wire connections + ground connections) for calculations. However, all example files included in the installation directory are pre-computed and can be opened without restrictions to display tables and graphs.

You can also download additional example files with fewer than 50 unknowns from this link >.

No, AN-SOF PRO is a lifetime license and will continue to function on the same PC where it was installed and activated, even after your plan expires. However, you will lose access to the following:

• Software Updates: You will no longer be able to download the latest versions, including bug fixes and security updates.
• Technical Support: You will no longer receive technical assistance from our team.
• Installer Access: Installers for discontinued versions will only be available for 3 years after discontinuation. After this period, they will no longer be provided. As technology evolves, we cannot guarantee long-term compatibility.
• Activation Key Replacement: If you lose your activation key for a discontinued version or need to transfer AN-SOF to another PC, we cannot issue a new key more than three years after the version has been discontinued.

While AN-SOF will continue to work on your installed PC (assuming the OS remains unchanged), we recommend renewing your plan to ensure access to the latest features, technology improvements, and ongoing support.

If you don’t renew your plan, the following will apply:

• Continued Functionality: AN-SOF will keep working on the same PC where it was installed and activated, but only with the last version available before your plan expired.
• No Updates: You won’t receive new versions, bug fixes, security patches, or feature updates.
• Limited Support: Technical support will no longer be available.
• Version Discontinuation: Your installed version will eventually be discontinued. Three years after discontinuation, its installer and activation key will no longer be available.

To maintain full functionality, updates, and support, we recommend renewing your plan before it expires. Customers who renew early receive special benefits and discounts.

Due to the availability of a fully functional trial version with no time limit, all sales of AN-SOF software licenses are final and non-refundable. This policy helps us ensure that users have a fair opportunity to try out the software before making a purchase. We encourage all users to thoroughly evaluate the trial version before purchasing a license. You can find detailed information about the conditions and process for exceptions to the non-refundable policy on our dedicated Refund Policy page.

No, consulting services are not included, as we do not offer consulting of any kind. However, our technical support—available with both plans—goes beyond resolving software issues. We assist customers in improving their models and expanding their understanding of antenna modeling techniques to maximize the capabilities of AN-SOF. While we provide tips and guidance, this should not be considered consulting.