Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9RUC callsign genealogy
Currently held by KERN, MARK 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 KD9RUC's current licensee, walking backwards.
- KERN, MARK JWIgranted 2015-02-12cancelled 2021-02-17
Successor callsigns
Callsigns held now by people who previously held KD9RUC.
No current licensee on record previously held this callsign.