Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7DUY callsign genealogy
Currently held by Holmes, William P
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 K7DUY's current licensee, walking backwards.
- Holmes, William PCAgranted 2014-08-14cancelled 2018-09-14
Successor callsigns
Callsigns held now by people who previously held K7DUY.
No current licensee on record previously held this callsign.