Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4OK callsign genealogy
Currently held by Maglievaz, Robert
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 KC4OK's current licensee, walking backwards.
- Maglievaz, RobertFLgranted 2018-03-20cancelled 2018-04-13
Successor callsigns
Callsigns held now by people who previously held KC4OK.
- McGillan-Overman, THOMAS FCAgranted 2000-04-08cancelled 2003-10-11
All historical holders
Every license row we've seen with the callsign KC4OK, oldest first.
- Mc Gillan, Thomas F CA1997-02-04 → cancelled 2000-04-08
- Maglievaz, Robert FL2018-04-13 active