Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3MK callsign genealogy
Currently held by DAHL, DONALD 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 W3MK's current licensee, walking backwards.
- McMillan Jr, RobertCAgranted 2017-11-21cancelled 2018-04-20
Successor callsigns
Callsigns held now by people who previously held W3MK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MK, oldest first.
- DAHL, DONALD E AL1994-03-08 → cancelled 2006-03-09
- Justice Jr, Jesse FL2006-03-31 → cancelled 2018-04-03
- McMillan Jr, Robert CA2018-04-20 active