Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0SYS callsign genealogy
Currently held by O DOWD, DOROTHY L
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 N0SYS's current licensee, walking backwards.
- BRANT, JUSTINOHgranted 2024-11-19cancelled 2026-07-17
Successor callsigns
Callsigns held now by people who previously held N0SYS.
- MAGER JR, GEORGE LNCgranted 2021-08-14
All historical holders
Every license row we've seen with the callsign N0SYS, oldest first.
- O DOWD, DOROTHY L MO2002-03-13 → cancelled 2014-06-10
- MAGER JR, GEORGE L NC2015-04-24 → cancelled 2021-08-14
- BRANT, JUSTIN OH2026-07-17 active