Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4ZZ callsign genealogy
Currently held by ROYSTON, RICHARD K
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 KF4ZZ's current licensee, walking backwards.
- ROYSTON, RICHARD KFLgranted 2004-10-26cancelled 2005-06-18
Successor callsigns
Callsigns held now by people who previously held KF4ZZ.
- Converse, Justin CGAgranted 2003-05-29cancelled 2015-08-25
All historical holders
Every license row we've seen with the callsign KF4ZZ, oldest first.
- Converse, Justin C GA1993-08-24 → cancelled 2003-05-29
- ROYSTON, RICHARD K FL2025-05-13 active