Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4X callsign genealogy
Currently held by Lagerholm, Michael 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 AB4X's current licensee, walking backwards.
- GAULDIN, DAVID KVAgranted 2013-02-25cancelled 2015-08-11
- KQ4TKno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AB4X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4X, oldest first.
- WOOD, JOHNNY W NC1998-05-29 → cancelled 2000-02-02
- Lagerholm, Michael W VA2006-03-04 → cancelled 2013-07-22
- GAULDIN, DAVID K VA2025-08-13 active