Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9NUX callsign genealogy
Currently held by Kiefer, Michael 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 KB9NUX'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 KB9NUX.
- KIEFER, MICHAEL JTXgranted 2016-06-07cancelled 2017-11-28