RFMapper Desktop Analysis

Assessing whether a site or a road has usable mobile service normally means a day in the field followed by a week in Excel. RF Mapper closes that gap. Field logs from three phones — one per carrier — are dropped into a project, and the system splits them by network, classifies every point against RSRP thresholds, and puts them on an interactive map alongside carrier tower locations and each carrier’s own published coverage.

From there it finds the things that actually matter to a client: the stretches where every carrier fails at once, the individual locations that fall below the emergency-call threshold, and which carrier to put the fleet’s SIMs on. Drop-out zones are snapped to real road names from OpenStreetMap and tied to the nearest named landmark. The output is a finished Word report in corporate format — not a data dump. Two report types are supported: fixed facility assessments and vehicle drive routes.

The carrier-attribution problem is the interesting one: when a phone loses its home network it camps on a competitor’s for emergency calls, and naive processing files those readings under the competitor — flattering the borrowed network while hiding the coverage hole on the one that failed. The splitter tracks each device’s home network and keeps the reading where it belongs, recorded as a loss of service. It also degrades gracefully on bad input: where timestamps have been corrupted, drop-out detection falls back to a position-and-distance method rather than silently producing zeroes, with the affected columns dropped from the report and footnoted. Runs as a self-hosted web application; the ingest pipeline is a watched folder, so field logs can be dropped in without going through the browser.