Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1ZAK callsign genealogy
Currently held by MORRIS, THOMAS J
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 N1ZAK's current licensee, walking backwards.
- Srisilpanan, SakarinCAgranted 2014-04-01cancelled 2015-10-02
Successor callsigns
Callsigns held now by people who previously held N1ZAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1ZAK, oldest first.
- MORRIS, THOMAS J NH1997-04-18 → cancelled 2009-04-21
- Srisilpanan, Sakarin CA2015-10-02 active