Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0MJ callsign genealogy
Currently held by Sowl, Marcus E
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 KD0MJ's current licensee, walking backwards.
- KB4OEno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KD0MJ.
- Sowl, Marcus EMNgranted 2025-04-08