Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4M callsign genealogy
Currently held by Smiley, Mark
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 AB4M's current licensee, walking backwards.
- Smiley, MarkVAgranted 2019-11-06cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held AB4M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4M, oldest first.
- Dail, William L VA2007-08-30 → cancelled 2019-11-20
- Smiley, Mark VA2019-12-10 active