About RepeaterList

A clean, fast browser for the worldwide amateur radio repeater directory published by hearham.com.

What it does

The full dataset (~22,000 repeaters) is imported into a local database and served as a searchable map and table. Filter by mode, band, country, access tone, frequency, or distance from your location, and open any repeater for full detail.

How the data is cleaned

The source data is free-text and inconsistent, so every record is normalized on import:

Mode — trimmed, de-cased, and split into canonical modes (FM, DMR, D-STAR, YSF, P25, NXDN, M17, …). Multi-mode repeaters like P25/YSF/D-STAR/DMR are parsed into their components and classified Analog / Digital / Mixed / Data / ATV.
Access tone — correctly typed as CTCSS (Hz), DCS, DMR Color Code, or NXDN RAN, rather than lumping everything together.
Country — derived from the repeater's coordinates by point-in-polygon against world borders, which is far more reliable than parsing the free-text city field.
Band is derived from frequency, duplicate records are removed, and invalid coordinates/frequencies are flagged.

Developer API

The same data is available as JSON:

GET /api/repeaters?band=2m&country=US&mode=DMR&page=1
GET /api/repeaters/{id}
GET /api/map?lat=..&lon=..&radius=50