Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JFB callsign genealogy
Currently held by Bristow, Jeff A
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 K4JFB's current licensee, walking backwards.
- Bristow, Jeff AFLgranted 2017-08-01cancelled 2017-08-19
Successor callsigns
Callsigns held now by people who previously held K4JFB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JFB, oldest first.
- HALL, HENRY C SC2005-03-12 → cancelled 2017-05-19
- Bristow, Jeff A FL2017-08-19 active