Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4UAX callsign genealogy
Currently held by DOWLING, THOMAS E
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 KM4UAX's current licensee, walking backwards.
- DOWLING, THOMAS EFLgranted 2007-02-02cancelled 2016-05-19
Successor callsigns
Callsigns held now by people who previously held KM4UAX.
No current licensee on record previously held this callsign.