Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1KDM callsign genealogy
Currently held by Machia Jr, James 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 W1KDM's current licensee, walking backwards.
- Machia Jr, James DMAgranted 2007-11-19cancelled 2015-10-02
Successor callsigns
Callsigns held now by people who previously held W1KDM.
No current licensee on record previously held this callsign.