Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9SFL callsign genealogy
Currently held by WAKEFIELD, DARREL L
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 K9SFL's current licensee, walking backwards.
- Porzel, Matthew EFLgranted 2021-06-24cancelled 2021-07-13
Successor callsigns
Callsigns held now by people who previously held K9SFL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9SFL, oldest first.
- WAKEFIELD, DARREL L WI1996-04-22 → cancelled 2008-04-23
- Porzel, Matthew E FL2021-07-13 active