Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4EMS callsign genealogy
Currently held by Simmons, Christopher E
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 KI4EMS's current licensee, walking backwards.
- CHAPPELL, MICHAEL ENCgranted 2013-08-14cancelled 2015-08-04
Successor callsigns
Callsigns held now by people who previously held KI4EMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI4EMS, oldest first.
- Simmons, Christopher E NC2003-06-10 → cancelled 2015-06-11
- CHAPPELL, MICHAEL E NC2025-05-20 active