Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9ZDW callsign genealogy
Currently held by Hertz, Mike G
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 KC9ZDW's current licensee, walking backwards.
- Hertz, Mike GILgranted 2013-05-28cancelled 2013-06-06
Successor callsigns
Callsigns held now by people who previously held KC9ZDW.
No current licensee on record previously held this callsign.