Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9AFZ callsign genealogy
Currently held by Hartwig, Max A
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 KD9AFZ's current licensee, walking backwards.
- Hartwig, Max AILgranted 2013-12-13cancelled 2014-01-16
Successor callsigns
Callsigns held now by people who previously held KD9AFZ.
No current licensee on record previously held this callsign.