Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9FZA callsign genealogy
Currently held by Seifert, Samuel O
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 KC9FZA'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 KC9FZA.
- Seifert, Samuel OINgranted 2014-02-07cancelled 2016-07-08