Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4MA callsign genealogy
Currently held by Van Zandt, John 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 KM4MA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KM4MA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4MA, oldest first.
- VAN MEURS, PAUL F FL2008-09-23 → cancelled 2020-12-23
- Van Zandt, John B AL2022-02-05 active