Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7THM callsign genealogy
Currently held by Merrill, 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 W7THM's current licensee, walking backwards.
- Merrill, TerryORgranted 2010-02-26cancelled 2010-04-13
Successor callsigns
Callsigns held now by people who previously held W7THM.
No current licensee on record previously held this callsign.