Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4YFR callsign genealogy
Currently held by Carl Boyd Post 42 American Legion 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 KO4YFR'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 KO4YFR.
- AF4CBactiveCarl Boyd Post 42 American Legion Amateur Radio ClubGAgranted 2022-03-29