Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SEN callsign genealogy
Currently held by Baierl, Gary
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 W1SEN's current licensee, walking backwards.
- Baierl, GaryCAgranted 2015-01-26cancelled 2020-05-22
Successor callsigns
Callsigns held now by people who previously held W1SEN.
- Baierl, GaryCAgranted 2022-02-11
All historical holders
Every license row we've seen with the callsign W1SEN, oldest first.
- HOLMES, FREDERICK A C FL1996-04-24 → cancelled 2008-04-25
- Baierl, Gary CA2020-05-22 → cancelled 2022-02-11