Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W9THA callsign genealogy
Currently held by Aronson, Theodore H
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 W9THA's current licensee, walking backwards.
- Aronson, Theodore HWIgranted 2011-07-19cancelled 2012-12-14
Successor callsigns
Callsigns held now by people who previously held W9THA.
No current licensee on record previously held this callsign.