Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HXM callsign genealogy
Currently held by SINGLEBACK, GEORGE W
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 K4HXM's current licensee, walking backwards.
- Colville, Justin MVAgranted 2020-09-28cancelled 2021-05-04
Successor callsigns
Callsigns held now by people who previously held K4HXM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HXM, oldest first.
- SINGLEBACK, GEORGE W VA1988-12-06 → cancelled 2000-12-07
- Colville, Justin M VA2021-05-04 active