Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SLF callsign genealogy
Currently held by Sugarloaf/USA Amateur Radio Club
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 W1SLF's current licensee, walking backwards.
- KB1KQXcancelledSugarloaf/USA Amateur Radio ClubMEgranted 2004-01-15cancelled 2004-02-20
Successor callsigns
Callsigns held now by people who previously held W1SLF.
No current licensee on record previously held this callsign.