Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ZMB callsign genealogy
Currently held by SUTHER, JOHN D
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 W0ZMB's current licensee, walking backwards.
- SUTHER, JOHN DKSgranted 2011-04-06cancelled 2021-02-23
Successor callsigns
Callsigns held now by people who previously held W0ZMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0ZMB, oldest first.
- WILLIAMS, FRANKLIN F MO1994-05-24 → cancelled 2006-05-25
- SUTHER, JOHN D KS2021-02-23 active