Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM2J callsign genealogy
Currently held by ROBINSON, JACOB 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 WM2J's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WM2J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM2J, oldest first.
- ROBINSON, JACOB C NY2008-04-25 → cancelled 2017-12-15
- Jonink, Martin SC2020-01-24 active