You can build a crude path profile using QGIS, the “Profile Tool” plugin, and the “SRTM Downloader.” No automatic antenna database, but zero malware risk.
Many consulting firms have abandoned Pathloss 5 for Pathloss 6 or CloudRF. You can find license transfers on: pathloss 5 hot download
Location: Main Toolbar > "Data" Tab > "Hot Download" Button. You can build a crude path profile using
The "Hot Download" Dialog Window: