Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7KZU callsign genealogy
Currently held by PUTMAN, DAVID W
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 W7KZU's current licensee, walking backwards.
- NAKAUCHI, TROY MNDgranted 2014-12-17cancelled 2017-02-18
Successor callsigns
Callsigns held now by people who previously held W7KZU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7KZU, oldest first.
- PUTMAN, DAVID W OR1995-11-28 → cancelled 2000-11-06
- NAKAUCHI, TROY M TN2017-02-18 active