Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4JMS callsign genealogy
Currently held by Smothers, Jonathan 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 KI4JMS's current licensee, walking backwards.
- Smothers, Jonathan MALgranted 2007-06-11cancelled 2007-09-06
Successor callsigns
Callsigns held now by people who previously held KI4JMS.
- Johnston, Stephen SFLgranted 2025-12-10
All historical holders
Every license row we've seen with the callsign KI4JMS, oldest first.
- Johnston, Stephen S FL2005-04-04 → cancelled 2005-04-26
- Smothers, Jonathan M AL2018-03-01 active