Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DPF callsign genealogy
Currently held by Firestone, David 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 K4DPF's current licensee, walking backwards.
- Firestone, David DVAgranted 1998-07-06cancelled 2007-04-17
Successor callsigns
Callsigns held now by people who previously held K4DPF.
No current licensee on record previously held this callsign.