Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9ZFI callsign genealogy
Currently held by Smith, William
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 K9ZFI's current licensee, walking backwards.
- Smith, WilliamILgranted 2024-03-23cancelled 2024-04-12
Successor callsigns
Callsigns held now by people who previously held K9ZFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9ZFI, oldest first.
- SMITH, RICHARD D IL2004-12-28 → cancelled 2017-01-11
- Smith, William IL2024-04-12 active