Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4MRT callsign genealogy
Currently held by DAVIS, BILLIE
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 N4MRT's current licensee, walking backwards.
- Davis IV, John RVAgranted 2015-09-15cancelled 2024-05-10
Successor callsigns
Callsigns held now by people who previously held N4MRT.
- Davis IV, John RVAgranted 2025-08-30
All historical holders
Every license row we've seen with the callsign N4MRT, oldest first.
- DAVIS, BILLIE AL1995-07-18 → cancelled 2007-07-19
- Davis IV, John R VA2024-05-10 → cancelled 2025-08-30