Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SWF callsign genealogy
Currently held by Kennedy, Mark L
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 K4SWF's current licensee, walking backwards.
- Kennedy, Mark LFLgranted 2001-12-14cancelled 2003-11-04
Successor callsigns
Callsigns held now by people who previously held K4SWF.
- KENNEDY, MARK LFLgranted 2025-11-21