Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ1X callsign genealogy
Currently held by SEAMANS, ARNOLD G
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 KJ1X's current licensee, walking backwards.
- Kalman, Michael ECAgranted 2010-03-03cancelled 2010-07-03
Successor callsigns
Callsigns held now by people who previously held KJ1X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ1X, oldest first.
- SEAMANS, ARNOLD G MA1998-05-27 → cancelled 2010-05-28
- Kalman, Michael E CA2020-04-30 active