Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC0TJP callsign genealogy
Currently held by Prachar, Timothy J
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 KC0TJP's current licensee, walking backwards.
- Prachar, Timothy JMNgranted 2019-07-01cancelled 2019-07-20
Successor callsigns
Callsigns held now by people who previously held KC0TJP.
- Schiel, John ACOgranted 2025-05-28
All historical holders
Every license row we've seen with the callsign KC0TJP, oldest first.
- Schiel, John A CO2014-09-15 → cancelled 2015-06-23
- Prachar, Timothy J MN2019-07-20 active