Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1OAR callsign genealogy
Currently held by Rieder, Otto A
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 W1OAR's current licensee, walking backwards.
- Rieder, Otto ANYgranted 2018-08-16cancelled 2018-09-05
Successor callsigns
Callsigns held now by people who previously held W1OAR.
No current licensee on record previously held this callsign.