Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1KD callsign genealogy
Currently held by GREENE, WILLIAM R
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 KC1KD's current licensee, walking backwards.
- RUIZ FERNANDEZ, HECTORCAgranted 2022-04-18cancelled 2022-08-30
Successor callsigns
Callsigns held now by people who previously held KC1KD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC1KD, oldest first.
- GREENE, WILLIAM R MA2007-12-28 → cancelled 2020-03-27
- RUIZ FERNANDEZ, HECTOR CA2022-08-30 active