Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7TOJ callsign genealogy
Currently held by Treadwell, David
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 K7TOJ's current licensee, walking backwards.
- Treadwell, DavidAZgranted 2013-10-17cancelled 2013-11-13
Successor callsigns
Callsigns held now by people who previously held K7TOJ.
No current licensee on record previously held this callsign.