Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF1TZ callsign genealogy
Currently held by Fitzsimmons, Sean 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 WF1TZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WF1TZ.
No current licensee on record previously held this callsign.