Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4TRZ callsign genealogy
Currently held by ROCKWELL, ROGER W
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 WB4TRZ'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 WB4TRZ.
- ROCKWELL, ROGER WFLgranted 2009-12-01cancelled 2010-01-05