Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZMM callsign genealogy
Currently held by JOHNSON JR, ANDREW 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 K4ZMM's current licensee, walking backwards.
- JOHNSON, BRUCE LVAgranted 2014-11-20cancelled 2014-12-09
Successor callsigns
Callsigns held now by people who previously held K4ZMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZMM, oldest first.
- JOHNSON JR, ANDREW B VA2001-06-12 → cancelled 2013-08-07
- JOHNSON, BRUCE L VA2014-12-09 active