Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7DUH callsign genealogy
Currently held by Larson, Brett
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 K7DUH's current licensee, walking backwards.
- Larson, Brett JWAgranted 2013-05-31cancelled 2016-06-21
Successor callsigns
Callsigns held now by people who previously held K7DUH.
No current licensee on record previously held this callsign.