Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4SWB callsign genealogy
Currently held by LITTLETON, MATTHEW P
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 KN4SWB's current licensee, walking backwards.
- LITTLETON, MATTHEW PSCgranted 2004-04-20cancelled 2007-03-30
Successor callsigns
Callsigns held now by people who previously held KN4SWB.
No current licensee on record previously held this callsign.