Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BCY callsign genealogy
Currently held by Collins, 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 K4BCY's current licensee, walking backwards.
- Collins, Williams JFLgranted 2020-09-04cancelled 2022-02-23
Successor callsigns
Callsigns held now by people who previously held K4BCY.
- Collins, William JFLgranted 2023-04-08
All historical holders
Every license row we've seen with the callsign K4BCY, oldest first.
- FRANKLIN, WILLIAM J AL1996-11-04 → cancelled 2008-11-05
- Collins, William J FL2022-02-23 → cancelled 2023-04-08