Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD5CDO callsign genealogy
Currently held by Sheffield, Kraig 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 KD5CDO's current licensee, walking backwards.
- Sheffield, Kraig DSDgranted 2015-10-20cancelled 2015-12-15
Successor callsigns
Callsigns held now by people who previously held KD5CDO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD5CDO, oldest first.
- SHEFFIELD, KRAIG D TX1997-09-02 → cancelled 2009-09-03
- Sheffield, Kraig D OK2025-11-21 active