Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4DSF callsign genealogy
Currently held by WORSHAM JR, ROBERT L
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 KD4DSF's current licensee, walking backwards.
- Dunsford, David DTNgranted 2023-01-20cancelled 2023-03-17
Successor callsigns
Callsigns held now by people who previously held KD4DSF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4DSF, oldest first.
- WORSHAM JR, ROBERT L VA2001-06-22 → cancelled 2013-08-07
- Dunsford, David D TN2023-03-17 active