Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA4GK callsign genealogy
Currently held by Keller, Grant L
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 AA4GK's current licensee, walking backwards.
- Keller, Grant LTNgranted 2022-05-12cancelled 2024-04-02
Successor callsigns
Callsigns held now by people who previously held AA4GK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA4GK, oldest first.
- REGNAUD, NORMAN L FL2005-12-15 → cancelled 2006-10-31
- Keller, Grant L TN2024-04-02 active