Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9YSH callsign genealogy
Currently held by CORNELSEN, MICHAEL L
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 W9YSH's current licensee, walking backwards.
- Cornelsen, Michael LOKgranted 2016-07-13cancelled 2016-08-02
Successor callsigns
Callsigns held now by people who previously held W9YSH.
- Cornelsen, Michael LOKgranted 2016-12-24cancelled 2017-05-26