Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DPH callsign genealogy
Currently held by Dempsey, Howard 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 K4DPH's current licensee, walking backwards.
- Howard, Douglas PFLgranted 2010-03-16cancelled 2011-01-07
Successor callsigns
Callsigns held now by people who previously held K4DPH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DPH, oldest first.
- Dempsey, Howard L AL1996-07-30 → cancelled 2008-07-31
- Howard, Douglas P FL2020-10-14 active