Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N8JMS callsign genealogy
Currently held by Swain, Justin M
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 N8JMS's current licensee, walking backwards.
- Swain, Justin MOHgranted 2014-09-04cancelled 2023-10-24
Successor callsigns
Callsigns held now by people who previously held N8JMS.
- KOPP, GREGORY TOHgranted 2017-06-06
All historical holders
Every license row we've seen with the callsign N8JMS, oldest first.
- SEALS, JOHN M MI2010-01-28 → cancelled 2022-04-15
- Swain, Justin M OH2023-10-24 active