Geophysical Survey Systems, Inc. (GSSI) is committed to providing our customers comprehensive support. This Tech Support web site contains sections for GSSI products including SIR 4000, SIR 30, StructureScan Mini, UtilityScan DF, RADAN and others. You are encouraged to check this site frequently for new and updated information. Some of the Features Include: Contact Need assistance? Contact us; softwareTechSupport@geophysical.com Products Software and Firmware updates, user’s manuals, product and data images, and technical documents Resources Visit frequently asked questions, manuals and quick start guides, and regulatory information Accounts Manage your RADAN activations New to the site? Need assistance accessing an existing account? Email softwareTechSupport@geophysical.com to request a new account or help in accessing existing accounts.