Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0XSU callsign genealogy
Currently held by Utermohlen, Shawn 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 W0XSU's current licensee, walking backwards.
- Utermohlen, Shawn DPAgranted 2012-10-02cancelled 2012-10-23
Successor callsigns
Callsigns held now by people who previously held W0XSU.
- Utermohlen, Shawn DPAgranted 2022-08-17