Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1KFR callsign genealogy
Currently held by CARREIRA JR, WILLIAM A
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 W1KFR's current licensee, walking backwards.
- CARREIRA JR, WILLIAM AGAgranted 2002-07-31cancelled 2003-02-28
Successor callsigns
Callsigns held now by people who previously held W1KFR.
No current licensee on record previously held this callsign.