Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB0NPM callsign genealogy
Currently held by GENTZ, RICHARD 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 WB0NPM's current licensee, walking backwards.
- GENTZ, RICHARD MCAgranted 2003-04-25cancelled 2003-06-27
Successor callsigns
Callsigns held now by people who previously held WB0NPM.
All historical holders
Every license row we've seen with the callsign WB0NPM, oldest first.
- GENTZ, RICHARD M CA1998-12-15 → cancelled 2003-04-25
- GENTZ, RICHARD M CA2013-06-18 → cancelled 2017-06-17