Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3OSI callsign genealogy
Currently held by PALAZZO, MICHAEL A
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 K3OSI's current licensee, walking backwards.
- Palazzo, Michael ANMgranted 2001-04-02cancelled 2010-11-13
Successor callsigns
Callsigns held now by people who previously held K3OSI.
- PALAZZO, MICHAEL AWAgranted 2022-06-24