Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5FLL callsign genealogy
Currently held by LACZKO, FRANK
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 K5FLL's current licensee, walking backwards.
- LACZKO, FRANK LWAgranted 2019-02-27cancelled 2019-03-19
Successor callsigns
Callsigns held now by people who previously held K5FLL.
- LACZKO, FRANK LWAgranted 2019-04-16
All historical holders
Every license row we've seen with the callsign K5FLL, oldest first.
- DEL TORTO, JAMES T OK1991-09-24 → cancelled 2003-09-25
- LACZKO, FRANK WA2019-03-19 → cancelled 2019-04-16