Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5MDA callsign genealogy
Currently held by M D ANDERSON HOSPITAL AMATEUR RADIO VOLUNTEERS
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 W5MDA's current licensee, walking backwards.
- Wright, Grant ATXgranted 2022-04-04cancelled 2022-04-22
Successor callsigns
Callsigns held now by people who previously held W5MDA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5MDA, oldest first.
- M D ANDERSON HOSPITAL AMATEUR RADIO VOLUNTEERS TX1999-06-02 → cancelled 2011-06-03
- Wright, Grant A TX2022-04-22 active