Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF0SGO callsign genealogy
Currently held by Polewski, Marcin
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 KF0SGO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF0SGO.
- Polewski, MarcinCOgranted 2024-12-03