Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9AJA callsign genealogy
Currently held by Allen, Austin 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 N9AJA's current licensee, walking backwards.
- Allen, Austin JILgranted 2020-12-15cancelled 2021-01-05
Successor callsigns
Callsigns held now by people who previously held N9AJA.
- Sobkoviak, Robert JILgranted 2023-01-04
All historical holders
Every license row we've seen with the callsign N9AJA, oldest first.
- Sobkoviak, Robert J IL2001-04-24 → cancelled 2002-12-24
- Allen, Austin J IL2021-01-05 active