Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ5MSY callsign genealogy
Currently held by Yelich, Mark S
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 KJ5MSY's current licensee, walking backwards.
- Yelich, Mark SCAgranted 2011-05-19cancelled 2011-06-18
Successor callsigns
Callsigns held now by people who previously held KJ5MSY.
- Yelich, Mark SCAgranted 2026-09-01