Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KG4DWB callsign genealogy
Currently held by MARTIN JR, JAMES C
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 KG4DWB's current licensee, walking backwards.
- Butkovich, David WFLgranted 2019-05-10cancelled 2019-05-31
Successor callsigns
Callsigns held now by people who previously held KG4DWB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG4DWB, oldest first.
- MARTIN JR, JAMES C SC1999-06-29 → cancelled 2011-06-30
- Butkovich, David W FL2019-05-31 active