Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JWX callsign genealogy
Currently held by STAUB, HAROLD B
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 K4JWX's current licensee, walking backwards.
- Mason, Michael JNCgranted 2016-11-21cancelled 2016-12-13
Successor callsigns
Callsigns held now by people who previously held K4JWX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JWX, oldest first.
- STAUB, HAROLD B FL1988-03-29 → cancelled 2000-03-30
- Mason, Michael J NC2016-12-13 active