Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA4FO callsign genealogy
Currently held by ORR, FREDERICK B
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 AA4FO's current licensee, walking backwards.
- ORR, FREDERICK BSCgranted 1995-04-10cancelled 2000-06-03
Successor callsigns
Callsigns held now by people who previously held AA4FO.
No current licensee on record previously held this callsign.