Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4UMH callsign genealogy
Currently held by BROWN, DONALD 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 WA4UMH's current licensee, walking backwards.
- Brown Jr, Donald RNCgranted 2002-06-17cancelled 2006-02-14
Successor callsigns
Callsigns held now by people who previously held WA4UMH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4UMH, oldest first.
- BROWN, DONALD R NC1998-08-04 → cancelled 2005-10-15
- BROWN JR, DONALD R NC2025-12-13 active