Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4UOO callsign genealogy
Currently held by WISE, KENNETH
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 W4UOO's current licensee, walking backwards.
- SPRENGER, MICHAEL TFLgranted 1994-08-22cancelled 2002-06-25
Successor callsigns
Callsigns held now by people who previously held W4UOO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4UOO, oldest first.
- WISE, KENNETH DC1993-10-12 → cancelled 1997-03-04
- SPRENGER, MICHAEL T FL2022-03-29 active