Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0TNU callsign genealogy
Currently held by MILLER, DONALD 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 K0TNU's current licensee, walking backwards.
- Sigafus, Marguerite TMOgranted 2025-04-19cancelled 2025-07-01
Successor callsigns
Callsigns held now by people who previously held K0TNU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0TNU, oldest first.
- MILLER, DONALD R NM2015-07-08 → cancelled 2023-05-23
- Sigafus, Marguerite T MO2025-07-01 active