Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GRB callsign genealogy
Currently held by CLAUSEN, TODD
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 W9GRB's current licensee, walking backwards.
- CLAUSEN, TODDWIgranted 2021-05-10cancelled 2021-06-02
Successor callsigns
Callsigns held now by people who previously held W9GRB.
No current licensee on record previously held this callsign.