Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MDA callsign genealogy
Currently held by Adderholt, Matthew
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 W4MDA's current licensee, walking backwards.
- Adderholt, MatthewTNgranted 2024-09-14cancelled 2024-11-19
Successor callsigns
Callsigns held now by people who previously held W4MDA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MDA, oldest first.
- FARROW, SUSAN B TN2009-12-11 → cancelled 2022-02-02
- Adderholt, Matthew TN2024-11-19 active