Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7KTZ callsign genealogy
Currently held by SCHAAL, NATHAN A
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 N7KTZ's current licensee, walking backwards.
- SCHAAL, NATHAN ATNgranted 2023-05-06cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held N7KTZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7KTZ, oldest first.
- SINGER, WILLIAM E WA2007-08-30 → cancelled 2019-11-30
- SCHAAL, NATHAN A TN2023-06-22 active