Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3FIL callsign genealogy
Currently held by Fabian III, John E
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 KB3FIL's current licensee, walking backwards.
- King, Joseph WMDgranted 2022-04-18cancelled 2022-12-28
Successor callsigns
Callsigns held now by people who previously held KB3FIL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB3FIL, oldest first.
- Fabian III, John E MD2010-05-12 → cancelled 2022-08-02
- King, Joseph W MD2022-12-28 active