Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9UFO callsign genealogy
Currently held by Hahn, David 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 KB9UFO's current licensee, walking backwards.
- Hahn, David JWIgranted 2014-03-11cancelled 2014-10-17
Successor callsigns
Callsigns held now by people who previously held KB9UFO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9UFO, oldest first.
- WHITESIDE, TIMOTHY A IL1999-03-04 → cancelled 2011-03-05
- Hahn, David J WI2024-10-08 active