Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0SPX callsign genealogy
Currently held by Sparks, John T
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 N0SPX's current licensee, walking backwards.
- Sparks, John TCOgranted 2017-07-17cancelled 2017-08-04
Successor callsigns
Callsigns held now by people who previously held N0SPX.
No current licensee on record previously held this callsign.