Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4BFM callsign genealogy
Currently held by Mueller, Fabian
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 N4BFM's current licensee, walking backwards.
- Mueller, FabianFLgranted 2023-06-28cancelled 2023-08-01
Successor callsigns
Callsigns held now by people who previously held N4BFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4BFM, oldest first.
- KYE, RICHARD L NC2003-01-29 → cancelled 2014-04-29
- Mueller, Fabian FL2023-08-01 active