Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO3THP callsign genealogy
Currently held by Parker, Tommy 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 KO3THP's current licensee, walking backwards.
- PARKER, TOMMYALgranted 2020-09-16cancelled 2020-10-16
Successor callsigns
Callsigns held now by people who previously held KO3THP.
- Parker, Tommy HALgranted 2021-01-08