Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4DK callsign genealogy
Currently held by CROWELL, THOMAS P
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 KD4DK's current licensee, walking backwards.
- CROWELL, THOMAS PGAgranted 1997-02-19cancelled 2002-10-08
- KU4BOno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KD4DK.
No current licensee on record previously held this callsign.