Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4MDK callsign genealogy
Currently held by KNIGHT, MICHAEL D
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 W4MDK's current licensee, walking backwards.
- KNIGHT, MICHAEL DGAgranted 2002-12-31cancelled 2007-02-08
Successor callsigns
Callsigns held now by people who previously held W4MDK.
No current licensee on record previously held this callsign.