Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4YAH callsign genealogy
Currently held by Dumala, Mary 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 K4YAH's current licensee, walking backwards.
- Kyle, Christopher GFLgranted 2023-01-21cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held K4YAH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4YAH, oldest first.
- Dumala, Mary A FL2010-11-28 → cancelled 2022-11-29
- Kyle, Christopher G FL2023-06-22 active