Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4FN callsign genealogy
Currently held by BY INVITATATION RADIO SOCIETY
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 AJ4FN's current licensee, walking backwards.
- KC9MKZcancelledBY INVITATATION RADIO SOCIETYILgranted 2007-11-07cancelled 2007-12-04
Successor callsigns
Callsigns held now by people who previously held AJ4FN.
No current licensee on record previously held this callsign.