Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB9ZHN callsign genealogy
Currently held by EWALD, DAVID W
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 WB9ZHN's current licensee, walking backwards.
- Ewald, David WWIgranted 2017-05-30cancelled 2017-06-23
Successor callsigns
Callsigns held now by people who previously held WB9ZHN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB9ZHN, oldest first.
- EWALD, DAVID W WI1996-06-05 → cancelled 2008-06-06
- Ewald, David W WI2017-06-23 active