Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF5DMZ callsign genealogy
Currently held by ZERGER, DAN 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 KF5DMZ's current licensee, walking backwards.
- ZERGER, DAN MNMgranted 2020-07-07cancelled 2022-01-07
Successor callsigns
Callsigns held now by people who previously held KF5DMZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF5DMZ, oldest first.
- Cox, Bobby B AR2009-10-21 → cancelled 2021-10-22
- ZERGER, DAN M NM2022-01-07 active