Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JI callsign genealogy
Currently held by THOMPSON, ROBERT 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 K4JI's current licensee, walking backwards.
- THOMPSON, ROBERT SVAgranted 1996-11-05cancelled 2000-03-28
Successor callsigns
Callsigns held now by people who previously held K4JI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JI, oldest first.
- GRAVESON SR, GEORGE L FL1996-04-15 → cancelled 2000-02-03
- THOMPSON, ROBERT S VA2020-01-06 active