Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JTN callsign genealogy
Currently held by Richgels, Justin P
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 K0JTN's current licensee, walking backwards.
- Richgels, Justin PMNgranted 2016-06-01cancelled 2016-06-21
Successor callsigns
Callsigns held now by people who previously held K0JTN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0JTN, oldest first.
- ZAMZOW, EDMUND E MN1988-03-22 → cancelled 2000-03-23
- Richgels, Justin P MN2016-06-21 active