Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4UH callsign genealogy
Currently held by UPSON, STEPHEN L
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 W4UH's current licensee, walking backwards.
- Thompson, Danny PFLgranted 1998-01-06cancelled 2007-04-28
Successor callsigns
Callsigns held now by people who previously held W4UH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4UH, oldest first.
- UPSON, STEPHEN L NC1997-10-28 → cancelled 2005-04-09
- Thompson, Danny P FL2017-02-01 active