Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3MRK callsign genealogy
Currently held by KELLER, MICHAEL R
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 W3MRK's current licensee, walking backwards.
- Kunkel, Matthew RCAgranted 2024-10-02cancelled 2024-10-25
Successor callsigns
Callsigns held now by people who previously held W3MRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MRK, oldest first.
- KELLER, MICHAEL R MD2012-07-27 → cancelled 2024-07-30
- Kunkel, Matthew R CA2024-10-25 active