Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3HAJ callsign genealogy
Currently held by SWARTZ, WILLIAM M
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 W3HAJ's current licensee, walking backwards.
- SWARTZ, WILLIAM MVAgranted 2004-06-17cancelled 2007-05-26
Successor callsigns
Callsigns held now by people who previously held W3HAJ.
No current licensee on record previously held this callsign.