Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AK4AZ callsign genealogy
Currently held by Sullivan, Thomas H
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 AK4AZ's current licensee, walking backwards.
- Sullivan, Thomas HVAgranted 2002-11-07cancelled 2010-08-10
Successor callsigns
Callsigns held now by people who previously held AK4AZ.
No current licensee on record previously held this callsign.