Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4AA callsign genealogy
Currently held by Radio Club Mala Hierba Azul
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 KY4AA's current licensee, walking backwards.
- KG4LCEcancelledDAWSON HILL CONTEST CLUBKYgranted 2001-01-05cancelled 2001-02-06
Successor callsigns
Callsigns held now by people who previously held KY4AA.
- NP4TTactiveRadio Club Mala Hierba AzulPRgranted 2021-06-15