Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DLM callsign genealogy
Currently held by McCall, 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 N4DLM's current licensee, walking backwards.
- McCall, David LNCgranted 2019-02-28cancelled 2020-06-26
Successor callsigns
Callsigns held now by people who previously held N4DLM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4DLM, oldest first.
- Smarr Jr, Roy G SC2008-03-04 → cancelled 2020-05-05
- McCall, David L NC2020-06-26 active