Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1NNR callsign genealogy
Currently held by WENTZLAFF, DAVID M
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 W1NNR's current licensee, walking backwards.
- WENTZLAFF, DAVID MNJgranted 2007-05-24cancelled 2014-02-19
Successor callsigns
Callsigns held now by people who previously held W1NNR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1NNR, oldest first.
- BUTLER, KEN CA1998-01-22 → cancelled 2010-01-23
- WENTZLAFF, DAVID M NJ2024-07-27 active