Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NK0I callsign genealogy
Currently held by Simmons, Isaac D
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 NK0I's current licensee, walking backwards.
- Simmons, Isaac DFLgranted 2021-04-14cancelled 2021-08-27
Successor callsigns
Callsigns held now by people who previously held NK0I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NK0I, oldest first.
- MESERAULL, MICHAEL D NE1990-10-02 → cancelled 2002-10-03
- WINTERS, STEPHEN G MO2009-08-08 → cancelled 2021-08-10
- Simmons, Isaac D MA2021-08-27 active