Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9SJM callsign genealogy
Currently held by Miller, Steven J
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 N9SJM's current licensee, walking backwards.
- Miller, Steven JWIgranted 2019-11-08cancelled 2023-01-18
Successor callsigns
Callsigns held now by people who previously held N9SJM.
- KING, RONALD LFLgranted 2021-12-07
All historical holders
Every license row we've seen with the callsign N9SJM, oldest first.
- KING, RONALD L FL1998-03-04 → cancelled 2001-09-01
- Miller, Steven J WI2023-01-18 active