Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4TX callsign genealogy
Currently held by Estabrook Sr, Mark D
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 WA4TX's current licensee, walking backwards.
- Estabrook Sr, Mark DTNgranted 2020-08-26cancelled 2023-03-24
Successor callsigns
Callsigns held now by people who previously held WA4TX.
No current licensee on record previously held this callsign.