Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW1H callsign genealogy
Currently held by Mathias, Steven
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 KW1H's current licensee, walking backwards.
- Mathias, StevenAZgranted 2018-12-13cancelled 2019-02-09
Successor callsigns
Callsigns held now by people who previously held KW1H.
- Boquiren, Billie MFLgranted 2016-12-23
All historical holders
Every license row we've seen with the callsign KW1H, oldest first.
- GIBERTI, PETER J MA1994-08-10 → cancelled 2006-08-11
- Boquiren, Billie M FL2016-11-30 → cancelled 2016-12-23
- Mathias, Steven AZ2019-02-09 active