Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ2MRB callsign genealogy
Currently held by Winmill Sr., Joseph L
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 KJ2MRB's current licensee, walking backwards.
- Winmill, Joseph LCAgranted 2013-04-18cancelled 2015-10-06
Successor callsigns
Callsigns held now by people who previously held KJ2MRB.
No current licensee on record previously held this callsign.