Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SFX callsign genealogy
Currently held by CUMMINGS, KEITH A
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 K7SFX's current licensee, walking backwards.
- Lovdahl, ColinAZgranted 2016-10-20cancelled 2016-12-06
Successor callsigns
Callsigns held now by people who previously held K7SFX.
- CUMMINGS, KEITH AWAgranted 2019-02-05
All historical holders
Every license row we've seen with the callsign K7SFX, oldest first.
- CUMMINGS, KEITH A WA2004-04-17 → cancelled 2007-12-18
- Lovdahl, Colin AZ2016-12-06 active