Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF1U callsign genealogy
Currently held by GRZYCH, FRANK J
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 WF1U's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WF1U.
- NICHOLSON, BRUCE TFLgranted 2024-03-05