Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4KM callsign genealogy
Currently held by Margraves, Kevin
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 KC4KM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC4KM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4KM, oldest first.
- LAAKKONEN, WILLIAM FL2013-10-17 → cancelled 2026-03-06
- Margraves, Kevin NC2026-03-24 active