Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JOJ callsign genealogy
Currently held by JACKSON, GERALD W
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 K4JOJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4JOJ.
- JACKSON, GERALD WALgranted 2006-05-06cancelled 2018-05-08