Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4XYL callsign genealogy
Currently held by KNIGHT JR, FRILEY B
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 N4XYL's current licensee, walking backwards.
- Tollison, Nancy LTXgranted 2014-01-21cancelled 2014-03-11
Successor callsigns
Callsigns held now by people who previously held N4XYL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4XYL, oldest first.
- KNIGHT JR, FRILEY B FL1999-11-04 → cancelled 2012-01-31
- Tollison, Nancy L TX2024-01-03 active