Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SDD callsign genealogy
Currently held by DAVIDSON, STANLEY 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 K7SDD's current licensee, walking backwards.
- Dunlap, Steven DWAgranted 2022-07-22cancelled 2023-03-28
Successor callsigns
Callsigns held now by people who previously held K7SDD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7SDD, oldest first.
- DAVIDSON, STANLEY D AZ2000-07-04 → cancelled 2012-07-06
- Dunlap, Steven D WA2023-03-28 active