Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3FX callsign genealogy
Currently held by COLBURN SR, JOHN T
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 W3FX's current licensee, walking backwards.
- COLBURN SR, JOHN TMIgranted 2000-11-03cancelled 2009-04-07
Successor callsigns
Callsigns held now by people who previously held W3FX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3FX, oldest first.
- HAYDEN, LEONARD O MD1997-02-19 → cancelled 2009-02-20
- COLBURN SR, JOHN T MI2020-09-26 active