Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7KDI callsign genealogy
Currently held by MAC GREGOR, WARREN S
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 K7KDI's current licensee, walking backwards.
- Schell, BobAZgranted 2020-02-24cancelled 2020-03-14
Successor callsigns
Callsigns held now by people who previously held K7KDI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7KDI, oldest first.
- MAC GREGOR, WARREN S WA1997-05-28 → cancelled 2009-05-29
- Schell, Bob AZ2020-03-14 active