Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA0A callsign genealogy
Currently held by ALLEY, HARTLEY R
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 NA0A's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NA0A.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA0A, oldest first.
- ALLEY, HARTLEY R CO1997-11-04 → cancelled 2001-05-29
- EINBERGER, JOHN W CO2023-03-22 active