Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7ARZ callsign genealogy
Currently held by KADOLPH, MICHAEL S
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 WA7ARZ's current licensee, walking backwards.
- KADOLPH, MICHAEL SAZgranted 2007-11-20cancelled 2015-09-19
Successor callsigns
Callsigns held now by people who previously held WA7ARZ.
- KADOLPH, MICHAEL SAZgranted 2021-02-06