Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF7LSU callsign genealogy
Currently held by MERCER JR, JOHN 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 WF7LSU's current licensee, walking backwards.
- MERCER JR, JOHN WWYgranted 2009-04-23cancelled 2009-05-27
Successor callsigns
Callsigns held now by people who previously held WF7LSU.
- MERCER JR, JOHN WCOgranted 2020-11-13