Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4GJO callsign genealogy
Currently held by Thompson, Kenneth C
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 N4GJO's current licensee, walking backwards.
- Thompson, Kenneth CMOgranted 2018-04-16cancelled 2020-03-28
Successor callsigns
Callsigns held now by people who previously held N4GJO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4GJO, oldest first.
- HALBERSTADT SR, ROBERT E MO2008-02-06 → cancelled 2020-03-10
- Thompson, Kenneth C MO2020-03-28 active