Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4RM callsign genealogy
Currently held by Mathis, Richard D
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 KJ4RM's current licensee, walking backwards.
- Mathis, Richard DTNgranted 2016-03-21cancelled 2021-06-22
Successor callsigns
Callsigns held now by people who previously held KJ4RM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4RM, oldest first.
- Solomon, Michael W VA2005-11-29 → cancelled 2018-02-22
- Mathis, Richard D TN2021-06-22 active