Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0BUH callsign genealogy
Currently held by Atadero, Arlyn 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 W0BUH's current licensee, walking backwards.
- Atadero, Arlyn JCOgranted 2018-03-20cancelled 2018-08-07
Successor callsigns
Callsigns held now by people who previously held W0BUH.
- OHNESORGE JR, WALTER FTNgranted 2008-08-02cancelled 2013-10-13
All historical holders
Every license row we've seen with the callsign W0BUH, oldest first.
- OHNESORGE JR, WALTER F TN2006-08-11 → cancelled 2008-08-02
- Atadero, Arlyn J CO2018-08-07 active