Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA2SWO callsign genealogy
Currently held by GILFILLAN, ROBERT 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 WA2SWO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA2SWO.
No current licensee on record previously held this callsign.