Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9KMV callsign genealogy
Currently held by CZAJA, JOHN 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 W9KMV's current licensee, walking backwards.
- CZAJA, JOHN JTXgranted 2002-01-11cancelled 2009-11-20
Successor callsigns
Callsigns held now by people who previously held W9KMV.
No current licensee on record previously held this callsign.