Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4RXX callsign genealogy
Currently held by Tupper, Dewitt C
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 W4RXX's current licensee, walking backwards.
- Tupper, Dewitt CCTgranted 2016-09-26cancelled 2025-05-30
Successor callsigns
Callsigns held now by people who previously held W4RXX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4RXX, oldest first.
- GRIGGS, WILLIAM D TX2006-07-01 → cancelled 2018-08-09
- Tupper, Dewitt C CT2025-05-30 active