Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FSA callsign genealogy
Currently held by Anderson 312, Frederick (Stewart) S
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 K4FSA's current licensee, walking backwards.
- Anderson, Frederick SFLgranted 2022-02-11cancelled 2022-04-05
Successor callsigns
Callsigns held now by people who previously held K4FSA.
No current licensee on record previously held this callsign.