Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7RDK callsign genealogy
Currently held by KOVALCIK, ROBERT D
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 KC7RDK's current licensee, walking backwards.
- KOVALCIK, ROBERT DAZgranted 2023-04-14cancelled 2024-06-15
Successor callsigns
Callsigns held now by people who previously held KC7RDK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7RDK, oldest first.
- DELZER, BRETT W OR1996-05-29 → cancelled 2008-05-30
- KOVALCIK, ROBERT D AZ2024-06-15 active