Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0NBZ callsign genealogy
Currently held by SundheimerMeyer, Brandon N
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 W0NBZ's current licensee, walking backwards.
- SundheimerMeyer, Brandon NMNgranted 2018-07-31cancelled 2023-05-12
Successor callsigns
Callsigns held now by people who previously held W0NBZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0NBZ, oldest first.
- SUNDHEIMER, DAVID M MN2014-06-04 → cancelled 2023-02-12
- SundheimerMeyer, Brandon N MN2023-05-12 active