Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF5BUL callsign genealogy
Currently held by BARRETT, WILLIAM W
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 KF5BUL's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF5BUL.
- BARRETT, WILLIAM WLAgranted 2010-01-22cancelled 2016-08-23