Help & Troubleshooting

Troubleshooting

Find help with imports, map points, sessions, and saved tests. Keep your original log files so you can retry an import safely.

Open the tool · Read the full usage guide

CSV will not import, or no points appear

• Choose a raw CSV with the CSV upload control. Use the separate JSON control for an exported test package.
• Check that the file has sender latitude and longitude, receiver latitude and longitude, and a payload column.
• Range-test payload rows must include a sequence marker such as seq 5. Other messages are not plotted as range-test points.
• Check that coordinates are present and valid. Compare your column names with the example in the CSV requirements.
• Select the sessions you want in the configuration dialog and confirm the sender location to finish the import.

Points or distances look wrong

• Confirm sender and receiver latitude/longitude values and check for swapped columns or missing minus signs.
• Review the sender coordinates in the session configuration. For a stationary sender with GPS drift, use a single sender location.
• Open a marker popup to compare its receiver position, sequence, SNR, and distance with the original log.
• Check which sessions are displayed before comparing results from different runs.

One run is split into several sessions

Sessions are grouped by sender node ID. A sequence number dropping below the previous number, or a time gap longer than 30 minutes, starts a new session.

Check the sequence numbers, dates, and times in your source log. Sender GPS drift alone does not split a session. See session detection details.

Map background is blank, or colors are unexpected

• Check your internet connection if background map tiles do not load. Save or export your current test before reloading the page.
• Use the map controls to switch between signal-strength colors and session colors.
• Turn on coverage circles if you want to view them, and open point popups for individual readings.

A saved JSON test will not load

Use a JSON package exported by this tool and choose Load saved JSON test. The file must contain a top-level sessions array.

If the file was edited or truncated, retry with an unmodified export. Keep the original CSV as a fallback. See the JSON format notes.

Saved tests are missing

Browser-saved tests depend on local browser storage. Check the browser and profile where you saved the test. Clearing site data can remove saved tests.

Load a previously exported JSON package or reimport the original CSV. Export important tests to JSON before clearing browser data or switching devices.

Still need help?

Use Suggestions & Issues on the tool page. Include what you tried, the exact error, your browser, and the steps that reproduce the problem.

If you share a sample log, remove any location or identifying data you do not want to disclose.