Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5FB callsign genealogy
Currently held by SLOUGHTER, WILLIAM J
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 K5FB's current licensee, walking backwards.
- Bergren III, Frank ETXgranted 2015-07-24cancelled 2015-10-16
Successor callsigns
Callsigns held now by people who previously held K5FB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5FB, oldest first.
- SLOUGHTER, WILLIAM J TX2006-08-30 → cancelled 2013-09-27
- Bergren III, Frank E MT2025-07-22 active