Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0AO callsign genealogy
Currently held by TIMM, JOHN W
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 N0AO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N0AO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0AO, oldest first.
- TIMM, JOHN W CA2014-09-30 → cancelled 2018-05-20
- Olp, Aaron D WV2020-06-13 active