Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4MRK callsign genealogy
Currently held by VERGARA, RAUL
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 KC4MRK's current licensee, walking backwards.
- KENNEDY, MICKEY RTNgranted 2012-09-06cancelled 2015-12-25
Successor callsigns
Callsigns held now by people who previously held KC4MRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4MRK, oldest first.
- VERGARA, RAUL FL1999-10-21 → cancelled 2011-10-22
- KENNEDY, MICKEY R SC2015-12-25 active