Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4MF callsign genealogy
Currently held by WINGARD, JOHN 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 AJ4MF's current licensee, walking backwards.
- WINGARD, JOHN CTNgranted 1999-01-28cancelled 2008-11-03
Successor callsigns
Callsigns held now by people who previously held AJ4MF.
- WINGARD, JOHN CTNgranted 2018-09-26