Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD9SEF callsign genealogy
Currently held by SCHROEDER, LARRY
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 WD9SEF's current licensee, walking backwards.
- Schroeder, LarryWIgranted 2013-04-03cancelled 2013-04-23
Successor callsigns
Callsigns held now by people who previously held WD9SEF.
- SCHROEDER, LARRYWIgranted 2020-11-06