Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS5EMS callsign genealogy
Currently held by Siems, Stefan P
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 KS5EMS's current licensee, walking backwards.
- Siems, Stefan PARgranted 2015-05-06cancelled 2016-03-11
Successor callsigns
Callsigns held now by people who previously held KS5EMS.
No current licensee on record previously held this callsign.