Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7SNO callsign genealogy
Currently held by OSTEN, MARTIN K
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 W7SNO's current licensee, walking backwards.
- Snow, Matthew LAZgranted 2024-05-09cancelled 2024-06-18
Successor callsigns
Callsigns held now by people who previously held W7SNO.
- Snow, MatthewAZgranted 2024-12-17
All historical holders
Every license row we've seen with the callsign W7SNO, oldest first.
- OSTEN, MARTIN K WA2011-05-21 → cancelled 2023-08-11
- Snow, Matthew L AZ2024-06-18 → cancelled 2024-12-17