Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4ZLN callsign genealogy
Currently held by WATTS, THOMAS F
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 WB4ZLN's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WB4ZLN.
- WATTS, THOMAS FNCgranted 2012-11-28cancelled 2025-02-20