Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4USF callsign genealogy
Currently held by UNIVERSITY OF SO FLORIDA RADIO & ELECTRONICS CLB
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 K4USF's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4USF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4USF, oldest first.
- UNIVERSITY OF SO FLORIDA RADIO & ELECTRONICS CLB FL1997-01-13 → cancelled 2008-12-05
- Harrison, Aubrey FL2019-10-22 active