Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4JAK callsign genealogy
Currently held by WARREN, KAREN 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 KD4JAK's current licensee, walking backwards.
- Phillips, Jack LGAgranted 2017-12-08
Successor callsigns
Callsigns held now by people who previously held KD4JAK.
- Phillips, Jack LGAgranted 2017-12-08
All historical holders
Every license row we've seen with the callsign KD4JAK, oldest first.
- WARREN, KAREN L NC1992-01-21 → cancelled 2004-01-22
- Phillips, Jack L GA2014-01-14 → cancelled 2017-12-08