Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4AAA callsign genealogy
Currently held by HOLLIDAY, WILLIAM R
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 KA4AAA's current licensee, walking backwards.
- ABRAHAM, ALEXANDER AGAgranted 2008-02-21cancelled 2010-10-23
Successor callsigns
Callsigns held now by people who previously held KA4AAA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4AAA, oldest first.
- HOLLIDAY, WILLIAM R TX1987-09-22 → cancelled 1999-09-23
- ABRAHAM, ALEXANDER A NC2020-08-18 active