Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW0LFE callsign genealogy
Currently held by Slezak, Ferenc I
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 KW0LFE's current licensee, walking backwards.
- Slezak, Ferenc ICAgranted 2018-01-19cancelled 2018-02-09
Successor callsigns
Callsigns held now by people who previously held KW0LFE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KW0LFE, oldest first.
- Wolfe, Keith R MA2003-02-22 → cancelled 2015-02-24
- Slezak, Ferenc I CA2018-02-09 active