Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9AZ callsign genealogy
Currently held by Clarke, William R
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 KD9AZ's current licensee, walking backwards.
- Clarke, William RWIgranted 2014-04-01cancelled 2014-06-03
Successor callsigns
Callsigns held now by people who previously held KD9AZ.
- LAPIN, GREGORY DILgranted 2016-09-20