Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DMC callsign genealogy
Currently held by MC LAUGHLIN, DONALD J
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 K4DMC's current licensee, walking backwards.
- Crummett, Dan MOKgranted 2023-06-09cancelled 2024-04-20
Successor callsigns
Callsigns held now by people who previously held K4DMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DMC, oldest first.
- MC LAUGHLIN, DONALD J GA2011-01-19 → cancelled 2023-04-18
- Crummett, Dan M OK2024-04-20 active