Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1ZEF callsign genealogy
Currently held by TJADER SR, MICHAEL H
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 N1ZEF's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N1ZEF.
- Tjader Sr, Michael HCTgranted 1999-06-02cancelled 2011-06-03