Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4ITM callsign genealogy
Currently held by Larson, James
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 KK4ITM's current licensee, walking backwards.
- Larson, JamesWIgranted 2026-02-11cancelled 2026-03-03
Successor callsigns
Callsigns held now by people who previously held KK4ITM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4ITM, oldest first.
- GLEAVES, ROGER L NC2012-04-24 → cancelled 2024-04-25
- Larson, James WI2026-03-03 active