Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4DLO callsign genealogy
Currently held by O NEILL, DAVID 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 K4DLO's current licensee, walking backwards.
- O NEILL, DAVID LFLgranted 1998-10-19cancelled 2008-01-15
Successor callsigns
Callsigns held now by people who previously held K4DLO.
No current licensee on record previously held this callsign.