Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SWI callsign genealogy
Currently held by GRAHAM, G 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 K4SWI's current licensee, walking backwards.
- GRAHAM, G WALgranted 2014-11-13cancelled 2015-12-11
Successor callsigns
Callsigns held now by people who previously held K4SWI.
No current licensee on record previously held this callsign.