Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0MDB callsign genealogy
Currently held by HILES, FRANCIS W
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N0MDB's current licensee, walking backwards.
- Byington, Michael DMOgranted 2026-05-08cancelled 2026-05-30
Successor callsigns
Callsigns held now by people who previously held N0MDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0MDB, oldest first.
- HILES, FRANCIS W MN1990-06-19 → cancelled 2002-06-20
- Byington, Michael D MO2026-05-30 active