Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF9U callsign genealogy
Currently held by Bottrell, Andrew D
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 WF9U's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WF9U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WF9U, oldest first.
- JACHIM, WILLIAM S IN2009-01-06 → cancelled 2021-01-30
- Bottrell, Andrew D IL2021-03-20 active