Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4SAL callsign genealogy
Currently held by Swiatowicz, James K
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 KO4SAL's current licensee, walking backwards.
- Swiatowicz, James KNCgranted 2020-06-25cancelled 2021-02-27
Successor callsigns
Callsigns held now by people who previously held KO4SAL.
No current licensee on record previously held this callsign.