Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NF9U callsign genealogy
Currently held by Riggs, Ronald R
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 NF9U's current licensee, walking backwards.
- Riggs, Ronald RWIgranted 2012-08-09cancelled 2014-05-28
Successor callsigns
Callsigns held now by people who previously held NF9U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NF9U, oldest first.
- HAYS, THOMAS L OK1998-11-20 → cancelled 2010-11-23
- Riggs, Ronald R IN2024-03-02 active