Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4FS callsign genealogy
Currently held by Slintak, Frantisek
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 KB4FS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KB4FS.
- STERN, ALBERT ACAgranted 2001-08-22cancelled 2013-11-20