Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC6LEO callsign genealogy
Currently held by NEGOSA, NATHAN 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 KC6LEO's current licensee, walking backwards.
- NEGOSA, NATHAN PFLgranted 2017-07-26cancelled 2025-03-28
Successor callsigns
Callsigns held now by people who previously held KC6LEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC6LEO, oldest first.
- SZLUKIER, MARK D CA1990-05-22 → cancelled 2002-05-23
- NEGOSA, NATHAN P FL2025-03-28 active