Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SWJ callsign genealogy
Currently held by Jonas, Susanne W
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 W4SWJ's current licensee, walking backwards.
- JONAS, SUSANNE WGAgranted 1995-11-10cancelled 2001-06-01
Successor callsigns
Callsigns held now by people who previously held W4SWJ.
No current licensee on record previously held this callsign.