Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4PAB callsign genealogy
Currently held by Unzueta, Horacio J
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 KD4PAB's current licensee, walking backwards.
- Unzueta, Horacio JFLgranted 2015-02-23cancelled 2015-03-13
Successor callsigns
Callsigns held now by people who previously held KD4PAB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4PAB, oldest first.
- UNZUETA, HORACIO J FL2002-05-21 → cancelled 2014-06-03
- Unzueta, Horacio J FL2025-04-08 active