Confidence: Medium · Source: FCC ULS · As of 2026-09-11
K4JSJ callsign genealogy
Currently held by JACKSON, JEREMY 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 K4JSJ's current licensee, walking backwards.
- JACKSON, JEREMY SALgranted 1999-12-21cancelled 2000-01-19
Successor callsigns
Callsigns held now by people who previously held K4JSJ.
All historical holders
Every license row we've seen with the callsign K4JSJ, oldest first.
- JACKSON, JEREMY S AL1999-01-28 → cancelled 1999-12-21
- JACKSON, JEREMY S AL2019-03-01 → cancelled 2024-03-15