Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4DY callsign genealogy
Currently held by RYDER, ANN P
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 KO4DY's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO4DY.
No current licensee on record previously held this callsign.