Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9JMJ callsign genealogy
Currently held by RUBENSTEIN, JASON C
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 N9JMJ's current licensee, walking backwards.
- JACOBSON, JAMES MILgranted 2011-02-09cancelled 2019-10-04
Successor callsigns
Callsigns held now by people who previously held N9JMJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9JMJ, oldest first.
- RUBENSTEIN, JASON C WI2007-06-19 → cancelled 2019-09-17
- JACOBSON, JAMES M IL2019-10-04 active