Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ABM callsign genealogy
Currently held by Michels, Arnold 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 K4ABM's current licensee, walking backwards.
- Michels, Arnold BFLgranted 2015-04-02cancelled 2015-04-24
Successor callsigns
Callsigns held now by people who previously held K4ABM.
No current licensee on record previously held this callsign.