Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0PX callsign genealogy
Currently held by FROST, TRISTRAM L
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 N0PX's current licensee, walking backwards.
- WB0ZOLcancelledMacon MO Amateur Radio ClubMOgranted 2017-09-26cancelled 2022-07-09
Successor callsigns
Callsigns held now by people who previously held N0PX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0PX, oldest first.
- FROST, TRISTRAM L CO2010-06-09 → cancelled 2022-06-22
- Macon MO Amateur Radio Club MO2022-07-09 active