Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SWL callsign genealogy
Currently held by GUMBUS, ARTHUR F
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 W1SWL's current licensee, walking backwards.
- Gumbus, Arthur FCTgranted 2003-02-04cancelled 2003-02-25
Successor callsigns
Callsigns held now by people who previously held W1SWL.
No current licensee on record previously held this callsign.