Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4JAZ callsign genealogy
Currently held by SARGENT, JAMES 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 KB4JAZ's current licensee, walking backwards.
- BUFFINGTON, JASMINE CSCgranted 2018-06-18cancelled 2018-08-28
Successor callsigns
Callsigns held now by people who previously held KB4JAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4JAZ, oldest first.
- SARGENT, JAMES A FL2004-10-19 → cancelled 2017-01-18
- BUFFINGTON, JASMINE C SC2018-08-28 active