Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4SXU callsign genealogy
Currently held by Hill, Jerry W
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 KO4SXU's current licensee, walking backwards.
- Hill, Jerry WSCgranted 2020-07-21cancelled 2021-08-31
Successor callsigns
Callsigns held now by people who previously held KO4SXU.
- Hill, Jerry WSCgranted 2021-09-21