Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4VJZ callsign genealogy
Currently held by SULLIVAN JR, THOMAS 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 K4VJZ's current licensee, walking backwards.
- Seltzer, DavidFLgranted 2013-03-12cancelled 2013-04-02
Successor callsigns
Callsigns held now by people who previously held K4VJZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4VJZ, oldest first.
- SULLIVAN JR, THOMAS J AL1994-06-16 → cancelled 2006-06-17
- Seltzer, David FL2023-04-11 active