Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA5TWZ callsign genealogy
Currently held by Dunn Sr, Marshall 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 WA5TWZ's current licensee, walking backwards.
- Dunn Sr, Marshall LCOgranted 2019-11-26cancelled 2019-12-24
Successor callsigns
Callsigns held now by people who previously held WA5TWZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA5TWZ, oldest first.
- DUNN JR, IVY E NM2007-10-25 → cancelled 2018-01-05
- Dunn Sr, Marshall L CO2019-12-24 active