Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ZER callsign genealogy
Currently held by Trombi, Michael S
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 K7ZER's current licensee, walking backwards.
- Trombi, Michael SCAgranted 2007-10-17cancelled 2007-11-16
Successor callsigns
Callsigns held now by people who previously held K7ZER.
- Trombi, Michael SCAgranted 2019-02-14