Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GYR callsign genealogy
Currently held by Umbricht, 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 W9GYR's current licensee, walking backwards.
- Umbricht, Michael LRIgranted 2013-04-30cancelled 2013-05-18
Successor callsigns
Callsigns held now by people who previously held W9GYR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9GYR, oldest first.
- UMBRICHT, GILBERT A IL1994-04-12 → cancelled 2006-04-14
- Umbricht, Michael L RI2023-02-28 active