Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4HAZ callsign genealogy
Currently held by Franklin, John R
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 KK4HAZ's current licensee, walking backwards.
- FRANKLIN, JOHN RFLgranted 2024-03-23cancelled 2026-02-13
Successor callsigns
Callsigns held now by people who previously held KK4HAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4HAZ, oldest first.
- Franklin, John R FL2012-02-17 → cancelled 2024-02-21
- FRANKLIN, JOHN R FL2026-02-13 active