Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4MK callsign genealogy
Currently held by Suwanee Valley Contest Club
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 KM4MK's current licensee, walking backwards.
- Butera Jr, Robert JGAgranted 2014-11-06cancelled 2015-05-23
Successor callsigns
Callsigns held now by people who previously held KM4MK.
- AD4TRactiveSuwanee Valley Contest ClubFLgranted 2022-05-11
All historical holders
Every license row we've seen with the callsign KM4MK, oldest first.
- ANDERSON SR, WAYNE C NC1989-01-17 → cancelled 2001-01-18
- Suwanee Valley Contest Club FL2008-02-29 → cancelled 2012-04-13
- Butera Jr, Robert J MA2025-02-26 active