Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9UMQ callsign genealogy
Currently held by LEWIS, BILLY R
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 K9UMQ's current licensee, walking backwards.
- Lewis, Ronald LTNgranted 2025-02-01cancelled 2025-03-11
Successor callsigns
Callsigns held now by people who previously held K9UMQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9UMQ, oldest first.
- LEWIS, BILLY R AZ1998-06-03 → cancelled 2010-06-04
- Lewis, Ronald L TN2025-03-11 active