Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4CN callsign genealogy
Currently held by CARROLL, FREDERICK A
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 AJ4CN's current licensee, walking backwards.
- CARROLL, FREDERICK ANCgranted 2005-12-29cancelled 2007-10-09
- WB1CRVno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AJ4CN.
No current licensee on record previously held this callsign.