Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA9TZW callsign genealogy
Currently held by BTHSW Alumni ARC
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 WA9TZW's current licensee, walking backwards.
- KD9TDOcancelledBTHSW Alumni ARCILgranted 2021-07-29cancelled 2021-08-17
Successor callsigns
Callsigns held now by people who previously held WA9TZW.
No current licensee on record previously held this callsign.