Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ECJ callsign genealogy
Currently held by KRUEGER, JOHN S
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 W4ECJ's current licensee, walking backwards.
- KRUEGER, JOHN SKYgranted 1996-10-10cancelled 2001-03-20
Successor callsigns
Callsigns held now by people who previously held W4ECJ.
No current licensee on record previously held this callsign.