Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SIX callsign genealogy
Currently held by CARLSON, CHRISTOPHER 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 N4SIX's current licensee, walking backwards.
- CARLSON, CHRISTOPHER PHIgranted 1999-06-28cancelled 2000-12-16
Successor callsigns
Callsigns held now by people who previously held N4SIX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SIX, oldest first.
- GABOR, WILLIAM D FL1988-09-20 → cancelled 2000-09-22
- CARLSON, CHRISTOPHER P NC2020-09-24 active