Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4YO callsign genealogy
Currently held by Mathews, Yolanda
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 KK4YO's current licensee, walking backwards.
- Mathews, YolandaFLgranted 2014-04-23cancelled 2015-01-09
Successor callsigns
Callsigns held now by people who previously held KK4YO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4YO, oldest first.
- GARDNER, GEORGENE W KY1999-02-10 → cancelled 2009-11-19
- Mathews, Yolanda FL2024-12-03 active