Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA2MAD callsign genealogy
Currently held by THOMPSON, DONALD 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 WA2MAD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA2MAD.
- THOMPSON, DONALD LTXgranted 2015-03-31cancelled 2015-11-03
All historical holders
Every license row we've seen with the callsign WA2MAD, oldest first.
- THOMPSON, DONALD E TX1990-03-27 → cancelled 1999-02-19
- Thompson, Donald L TX2012-06-13 → cancelled 2015-03-31
- THOMPSON, DONALD L TX2015-11-03 active