Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9YV callsign genealogy
Currently held by UWMARS Alumni Booster Club
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 W9YV's current licensee, walking backwards.
- Eichman Jr, Thomas EWIgranted 2022-02-01cancelled 2022-03-26
Successor callsigns
Callsigns held now by people who previously held W9YV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9YV, oldest first.
- UWMARS Alumni Booster Club WI2010-02-12 → cancelled 2022-03-08
- Eichman Jr, Thomas E WI2022-03-26 active