Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4AYM callsign genealogy
Currently held by Davidson, Donald 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 WA4AYM's current licensee, walking backwards.
- DAVIDSON, MICHAEL WALgranted 2023-07-04cancelled 2024-03-29
Successor callsigns
Callsigns held now by people who previously held WA4AYM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4AYM, oldest first.
- Davidson, Donald W AL2016-11-22 → cancelled 2021-08-12
- DAVIDSON, MICHAEL W AL2024-03-29 active