Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TIO callsign genealogy
Currently held by Merchant, Thomas E
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 K4TIO's current licensee, walking backwards.
- Merchant, Thomas ETNgranted 2017-06-30
Successor callsigns
Callsigns held now by people who previously held K4TIO.
- Merchant, Thomas ETNgranted 2017-06-30