Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KE7OSI callsign genealogy
Currently held by Small, Matthew P
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 KE7OSI's current licensee, walking backwards.
- Adams, Grace EORgranted 2017-05-25cancelled 2019-05-31
Successor callsigns
Callsigns held now by people who previously held KE7OSI.
- Small, Matthew PORgranted 2017-09-07
All historical holders
Every license row we've seen with the callsign KE7OSI, oldest first.
- Small, Matthew P OR2007-09-11 → cancelled 2007-09-29
- Adams, Grace E OR2019-05-31 active