Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9XN callsign genealogy
Currently held by HYER, NICHOLAS T
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 K9XN's current licensee, walking backwards.
- HYER, NICHOLAS TINgranted 2012-11-27cancelled 2018-11-24
Successor callsigns
Callsigns held now by people who previously held K9XN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9XN, oldest first.
- WINDAU, MILTON G AZ2006-09-08 → cancelled 2018-11-06
- HYER, NICHOLAS T IN2018-11-24 active