Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4KLF callsign genealogy
Currently held by Furlo Sr, Michael P
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 KF4KLF's current licensee, walking backwards.
- Furlo Sr, Michael PCTgranted 2017-10-16cancelled 2018-05-30
Successor callsigns
Callsigns held now by people who previously held KF4KLF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4KLF, oldest first.
- DEFOOR, STEVEN K AL1996-06-17 → cancelled 2008-06-18
- Furlo Sr, Michael P CT2018-05-30 active