Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA7NAZ callsign genealogy
Currently held by Robertson, William 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 KA7NAZ's current licensee, walking backwards.
- Robertson, William SORgranted 2017-11-17cancelled 2017-12-08
Successor callsigns
Callsigns held now by people who previously held KA7NAZ.
No current licensee on record previously held this callsign.