Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3MSR callsign genealogy
Currently held by RADOWSKI, MICHAEL 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 K3MSR's current licensee, walking backwards.
- RADOWSKI, MICHAEL SMDgranted 2014-04-14cancelled 2014-06-20
Successor callsigns
Callsigns held now by people who previously held K3MSR.
No current licensee on record previously held this callsign.