Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7TOX callsign genealogy
Currently held by WALKER, MATTHEW R
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 N7TOX's current licensee, walking backwards.
- WALKER, MATTHEW RUTgranted 2010-04-23cancelled 2010-06-12
Successor callsigns
Callsigns held now by people who previously held N7TOX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7TOX, oldest first.
- HOWCROFT, REBECCA UT1991-08-20 → cancelled 2003-08-21
- WALKER, MATTHEW R AZ2020-04-25 active