Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4YFS callsign genealogy
Currently held by Daleville Area Amateur Radio Service
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 KO4YFS'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 KO4YFS.
- K2DALcancelledDaleville Amateur Radio ClubALgranted 2022-03-22cancelled 2026-07-07