Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6WMK callsign genealogy
Currently held by Kessler, William M
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 W6WMK's current licensee, walking backwards.
- Kessler, William MCAgranted 2026-01-29cancelled 2026-05-01
Successor callsigns
Callsigns held now by people who previously held W6WMK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6WMK, oldest first.
- CRANE, IRVING CA1995-11-28 → cancelled 2007-11-29
- Kessler, William M CA2026-05-01 active