Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4MBM callsign genealogy
Currently held by JOHNSON SR, RAYMOND 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 KB4MBM's current licensee, walking backwards.
- Mathis, Macey BGAgranted 2025-01-18cancelled 2025-02-14
Successor callsigns
Callsigns held now by people who previously held KB4MBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4MBM, oldest first.
- JOHNSON SR, RAYMOND E NC2004-08-17 → cancelled 2016-08-16
- Mathis, Macey B GA2025-02-14 active