Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD7SQ callsign genealogy
Currently held by GEIBEL, WILLIAM W
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 KD7SQ's current licensee, walking backwards.
- N7FQSno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KD7SQ.
- GEIBEL, WILLIAM WORgranted 2025-03-25