Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4UWD callsign genealogy
Currently held by CARBY, RICHARD H
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 KD4UWD's current licensee, walking backwards.
- CARBY, RICHARD HFLgranted 2012-05-11cancelled 2012-06-12
Successor callsigns
Callsigns held now by people who previously held KD4UWD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4UWD, oldest first.
- CARBY, RICHARD H FL1999-08-03 → cancelled 2004-12-23
- Carby, Richard H FL2022-03-24 active