Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9EZ callsign genealogy
Currently held by BONGRATZ, JOSEPH M
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 KD9EZ's current licensee, walking backwards.
- Mosier, Nathan SINgranted 2017-09-11cancelled 2017-11-03
Successor callsigns
Callsigns held now by people who previously held KD9EZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD9EZ, oldest first.
- BONGRATZ, JOSEPH M IL1988-10-11 → cancelled 2000-10-12
- Mosier, Nathan S IN2017-11-03 active