Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9LZ callsign genealogy
Currently held by ZIMMERMAN, LOUIS 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 K9LZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K9LZ.
No current licensee on record previously held this callsign.