Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7FU callsign genealogy
Currently held by ROSEBUD RADIO CLUB
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 W7FU's current licensee, walking backwards.
- PETRICH, JOHN MWAgranted 1997-04-16cancelled 2001-01-23
Successor callsigns
Callsigns held now by people who previously held W7FU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7FU, oldest first.
- ROSEBUD RADIO CLUB MI1997-08-08 → cancelled 1999-05-28
- PETRICH, JOHN M WA2020-10-27 active