Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5SMK callsign genealogy
Currently held by Krupinski, Stephen 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 K5SMK's current licensee, walking backwards.
- KRUPINSKI, STEPHEN MTXgranted 2020-08-14cancelled 2020-09-01
Successor callsigns
Callsigns held now by people who previously held K5SMK.
No current licensee on record previously held this callsign.