Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9DUO callsign genealogy
Currently held by ELTGROTH, MATTHEW J
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 K9DUO's current licensee, walking backwards.
- BURGESS, KELLY BVAgranted 2008-09-20cancelled 2009-07-14
Successor callsigns
Callsigns held now by people who previously held K9DUO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9DUO, oldest first.
- ELTGROTH, MATTHEW J UT1998-04-13 → cancelled 2009-02-13
- BURGESS, KELLY B VA2019-04-26 active