uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KC1SWN callsign genealogy

Currently held by CHURCHILL, MARC

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 KC1SWN's current licensee, walking backwards.

The current licensee has not held any other callsign on record.

Successor callsigns

Callsigns held now by people who previously held KC1SWN.

  1. KA1EFMactive· T
    CHURCHILL, MARCMAgranted 2024-05-24