Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9ZWF callsign genealogy
Currently held by Palacio, Alfred
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 K9ZWF's current licensee, walking backwards.
- Palacio, AlfredCAgranted 2015-05-01cancelled 2024-07-09
Successor callsigns
Callsigns held now by people who previously held K9ZWF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9ZWF, oldest first.
- LUDMER, CHARLES H IL1996-03-11 → cancelled 2008-03-12
- Palacio, Alfred CA2024-07-09 active