Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3D callsign genealogy
Currently held by MC EACHEN JR, WILLIAM A
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 AB3D's current licensee, walking backwards.
- Vail, MarcOKgranted 2020-05-14cancelled 2020-06-19
Successor callsigns
Callsigns held now by people who previously held AB3D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB3D, oldest first.
- MC EACHEN JR, WILLIAM A DE2008-09-12 → cancelled 2018-05-15
- Vail, Marc OK2020-06-19 active