Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3DF callsign genealogy
Currently held by INIGO, EMIGDIO J
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 AB3DF's current licensee, walking backwards.
- FOUNTAIN, DERRIC CMDgranted 2009-04-07cancelled 2009-04-28
Successor callsigns
Callsigns held now by people who previously held AB3DF.
- INIGO, EMIGDIO JMDgranted 2025-03-21
All historical holders
Every license row we've seen with the callsign AB3DF, oldest first.
- INIGO, EMIGDIO J MD1999-02-03 → cancelled 2005-06-14
- FOUNTAIN, DERRIC C MD2021-02-24 active