Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JOB callsign genealogy
Currently held by BARNETT, JOHN O
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 K4JOB's current licensee, walking backwards.
- BRUMUND, JO CGAgranted 2004-06-10cancelled 2014-01-07
Successor callsigns
Callsigns held now by people who previously held K4JOB.
- Barnett, John OSDgranted 2018-02-27
All historical holders
Every license row we've seen with the callsign K4JOB, oldest first.
- BARNETT, JOHN O SD1998-12-09 → cancelled 2008-05-02
- BRUMUND, JO C FL2023-11-17 active