Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6MKA callsign genealogy
Currently held by DUNKELBERGER, WILLIAM D
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 W6MKA's current licensee, walking backwards.
- Marr, Geoffrey MCOgranted 2022-08-02cancelled 2024-11-13
Successor callsigns
Callsigns held now by people who previously held W6MKA.
- DUNKELBERGER, WILLIAM DVAgranted 2002-11-26cancelled 2007-08-24
All historical holders
Every license row we've seen with the callsign W6MKA, oldest first.
- DUNKELBERGER, WILLIAM D VA1999-06-25 → cancelled 2002-11-26
- Marr, Geoffrey M KS2024-11-13 active