Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4QB callsign genealogy
Currently held by Thomas, John S
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 K4QB's current licensee, walking backwards.
- Thomas, John SKYgranted 2011-04-08cancelled 2018-12-11
Successor callsigns
Callsigns held now by people who previously held K4QB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4QB, oldest first.
- WISE JR, HOWARD B FL2006-10-07 → cancelled 2018-11-21
- Thomas, John S KY2018-12-11 active