Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NM9O callsign genealogy
Currently held by WAGNER, MARTIN G
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 NM9O's current licensee, walking backwards.
- Okeson-Harlow, MattWIgranted 2011-07-08cancelled 2013-06-08
Successor callsigns
Callsigns held now by people who previously held NM9O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NM9O, oldest first.
- WAGNER, MARTIN G IL1997-06-20 → cancelled 2000-08-14
- Okeson-Harlow, Matt WI2023-03-23 active