Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9NKR callsign genealogy
Currently held by Koerner, Alex 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 W9NKR's current licensee, walking backwards.
- Koerner, Alex JILgranted 2026-01-23cancelled 2026-02-10
Successor callsigns
Callsigns held now by people who previously held W9NKR.
- Hays, Christopher BTXgranted 2014-03-15cancelled 2014-04-29
All historical holders
Every license row we've seen with the callsign W9NKR, oldest first.
- Hays, Christopher B TX2014-01-31 → cancelled 2014-03-15
- Koerner, Alex J IL2026-02-10 active