Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ONE callsign genealogy
Currently held by AUSTIN, JAMES D
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 K7ONE's current licensee, walking backwards.
- Babcock, Thomas MFLgranted 2018-08-16cancelled 2022-08-16
Successor callsigns
Callsigns held now by people who previously held K7ONE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7ONE, oldest first.
- AUSTIN, JAMES D AZ2010-05-21 → cancelled 2022-05-24
- Babcock, Thomas M FL2022-08-16 active