Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4RFJ callsign genealogy
Currently held by Boston, Joseph K
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 N4RFJ's current licensee, walking backwards.
- Boston, Joseph KFLgranted 2003-02-28cancelled 2005-07-19
Successor callsigns
Callsigns held now by people who previously held N4RFJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4RFJ, oldest first.
- WINTZINGER, JOANNE E AZ1988-08-09 → cancelled 2000-08-10
- Boston, Joseph K FL2005-07-19 → cancelled 2017-07-20