Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9KEP callsign genealogy
Currently held by KEPNER, SEAN C
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 W9KEP's current licensee, walking backwards.
- KEPNER, SEAN CINgranted 2017-01-24cancelled 2020-07-21
Successor callsigns
Callsigns held now by people who previously held W9KEP.
- KEPNER, SEAN CINgranted 2021-07-02
All historical holders
Every license row we've seen with the callsign W9KEP, oldest first.
- TAMMEN, WILLIAM J IL1996-07-03 → cancelled 2008-07-04
- KEPNER, SEAN C IN2020-07-21 → cancelled 2021-07-02