Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5MSZ callsign genealogy
Currently held by Zavadsky, Matthew 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 K5MSZ's current licensee, walking backwards.
- Zavadsky, Matthew STXgranted 2012-05-17cancelled 2015-12-29
Successor callsigns
Callsigns held now by people who previously held K5MSZ.
No current licensee on record previously held this callsign.