Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU0S callsign genealogy
Currently held by KEMNITZ, HANNO A
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 WU0S's current licensee, walking backwards.
- Vinje, Rick DMNgranted 2013-05-03cancelled 2014-06-17
Successor callsigns
Callsigns held now by people who previously held WU0S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU0S, oldest first.
- KEMNITZ, HANNO A NE1999-02-25 → cancelled 2011-02-26
- Vinje, Rick D MN2014-06-17 → cancelled 2026-06-18