Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DSP callsign genealogy
Currently held by HALL, DOUGLAS 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 K4DSP's current licensee, walking backwards.
- HALL, DOUGLAS DNCgranted 1991-07-02cancelled 2000-12-16
- WA4NMZno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4DSP.
No current licensee on record previously held this callsign.