Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4UO callsign genealogy
Currently held by Martin Jr, Elwood H
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 AF4UO's current licensee, walking backwards.
- MARTIN JR, ELWOOD HFLgranted 1994-08-25cancelled 2000-05-23
Successor callsigns
Callsigns held now by people who previously held AF4UO.
- Martin Jr, Elwood HFLgranted 2000-06-20cancelled 2003-09-30