Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6ZLU callsign genealogy
Currently held by LUETZOW, ROBERT 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 K6ZLU's current licensee, walking backwards.
- LUETZOW, ROBERT HCAgranted 2007-06-19cancelled 2015-09-15
Successor callsigns
Callsigns held now by people who previously held K6ZLU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6ZLU, oldest first.
- GILPIN, LESTER W CA1995-01-26 → cancelled 2000-12-14
- LUETZOW, ROBERT H CA2025-07-30 active