Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA6ISN callsign genealogy
Currently held by ROONEY, DONALD 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 KA6ISN's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KA6ISN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA6ISN, oldest first.
- ROONEY, DONALD J CA1994-06-22 → cancelled 2006-03-02
- ROONEY, DONALD CA2024-07-06 active