Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7KKW callsign genealogy
Currently held by NULL, JOHN T
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 W7KKW's current licensee, walking backwards.
- Null, Jason WAZgranted 2017-02-07cancelled 2017-12-19
Successor callsigns
Callsigns held now by people who previously held W7KKW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7KKW, oldest first.
- NULL, JOHN T AZ2005-08-30 → cancelled 2017-11-29
- Null, Jason W AZ2017-12-19 active