Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WK4KM callsign genealogy
Currently held by MARTENS, KENNETH J
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 WK4KM's current licensee, walking backwards.
- MARTENS, KENNETH JFLgranted 2016-03-14cancelled 2018-01-03
Successor callsigns
Callsigns held now by people who previously held WK4KM.
No current licensee on record previously held this callsign.