Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ISS callsign genealogy
Currently held by Buzuma, William T
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 K4ISS's current licensee, walking backwards.
- Buzuma, William TVAgranted 2018-10-19cancelled 2023-01-18
Successor callsigns
Callsigns held now by people who previously held K4ISS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ISS, oldest first.
- BELLOWS, GEORGE F FL2007-10-18 → cancelled 2020-01-17
- Buzuma, William T VA2023-01-18 active