Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7ZTR callsign genealogy
Currently held by LIVINGSTON, MICHAEL 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 N7ZTR's current licensee, walking backwards.
- Rissler, TravisCAgranted 2021-05-19cancelled 2021-06-07
Successor callsigns
Callsigns held now by people who previously held N7ZTR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7ZTR, oldest first.
- LIVINGSTON, MICHAEL A AZ2002-06-29 → cancelled 2014-07-03
- Rissler, Trevis CA2021-06-07 active