Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9SA callsign genealogy
Currently held by ALLISON III, CHARLES R
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 K9SA's current licensee, walking backwards.
- KC9OKWcancelledSUHFARSILgranted 2008-10-16cancelled 2018-04-17
Successor callsigns
Callsigns held now by people who previously held K9SA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9SA, oldest first.
- ALLISON III, CHARLES R IL2009-11-10 → cancelled 2017-03-03
- SUHFARS IL2018-04-17 active