Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5MKM callsign genealogy
Currently held by MULDER, MARK K
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 K5MKM's current licensee, walking backwards.
- MULDER, MARK KMTgranted 2024-06-26cancelled 2025-07-25
Successor callsigns
Callsigns held now by people who previously held K5MKM.
No current licensee on record previously held this callsign.