Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5TLZ callsign genealogy
Currently held by LEE, WILLIAM D
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 N5TLZ's current licensee, walking backwards.
- Lee, William DCOgranted 2021-06-28cancelled 2021-07-17
Successor callsigns
Callsigns held now by people who previously held N5TLZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5TLZ, oldest first.
- LEE, WILLIAM D TX1991-05-14 → cancelled 2003-05-15
- Lee, William D CO2021-07-17 active