Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA3J callsign genealogy
Currently held by CLARK, 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 NA3J's current licensee, walking backwards.
- Joseph, Jacob MPAgranted 2024-04-11cancelled 2024-05-17
Successor callsigns
Callsigns held now by people who previously held NA3J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA3J, oldest first.
- CLARK, JOHN W CO2012-03-21 → cancelled 2024-04-30
- Joseph, Jacob M PA2024-05-17 active