Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4TDJ callsign genealogy
Currently held by DAVIS JR, TIMOTHY J
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 KO4TDJ's current licensee, walking backwards.
- DAVIS JR, TIMOTHY JTNgranted 2021-04-26cancelled 2021-05-14
Successor callsigns
Callsigns held now by people who previously held KO4TDJ.
No current licensee on record previously held this callsign.