Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3SM callsign genealogy
Currently held by SPINAZZOLA, MICHAEL
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 K3SM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K3SM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3SM, oldest first.
- SPINAZZOLA, MICHAEL DE2007-06-13 → cancelled 2019-08-20
- Michael, Shahn E FL2019-09-07 active