Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4QOA callsign genealogy
Currently held by GRAHAM JR, HORACE T
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 K4QOA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4QOA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4QOA, oldest first.
- GRAHAM JR, HORACE T FL1996-04-05 → cancelled 2008-04-08
- Prosser, Rhoberta J GA2026-07-17 active