Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0YWB callsign genealogy
Currently held by KLAUS, ROBERT J
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 N0YWB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N0YWB.
- KLAUS, ROBERT JIAgranted 2013-11-19cancelled 2013-12-13
All historical holders
Every license row we've seen with the callsign N0YWB, oldest first.
- KLAUS, ROBERT J IA2013-07-02 → cancelled 2013-11-19
- KLAUS, ROBERT J IA2023-09-22 active